What's New

This document lists the change history for the user-level Wind-US documentation.

22 Jan 2024

• Updated the WIND Installation Guide. Removed information on outdated code distribution mechanisms.

4 Sep 2019

• Updated information about negative variable names in CFPOST and added a new example describing their proper usage with the interpolate command.

24 Jul 2018

• For the NASA3287 chemistry file, corrected the sign of the a₂ coefficient in the curve fit for Gibbs free energy, G/RT.

14 Nov 2016

• For the TURBULENCE keyword, in the section on Specifying Freestream k and ω Values for the SST Model, corrected the description to indicate that inflow turbulence values are reapplied every cycle for both structured and unstructured grids.

4 Nov 2016

• Updated the Wind-US Installation Guide to reflect our revised source code distribution mechanism and current build instructions.

30 Sep 2016

• Wind-US 4.0 documentation approved for public release.
  • "Wind-US User's Guide Version 4.0," Dennis A. Yoder, NASA TM-2016-219145, Sep 2016.
  Once again, thanks to all those who provided input.
• Updated the Wind-US Documentation Home Page and the User's Guide for Wind-US 4.0. Documentation for the last previous version still exists, but is no longer being maintained.
  • The description of parallel processing has been updated to better describe use of MPI and remove references to older computer hardware.
  • New keywords:
    • BC [LIMITER] controls whether the DQ LIMITER is applied to coupled boundaries in structured zones.
    • K-E SOURCE activates optional source term corrections for all structured grid k-ε turbulence models.
    • SST STRESS [LIMITER] COEFFICIENT controls the value of the SST stress limiter coefficient.
    • VARIABLE TURBULENT PRANDTL NUMBER activates one of several models for variable turbulent Prandtl number on structured grids.
    • VARIABLE TURBULENT SCHMIDT NUMBER allows one to specify different turbulent Schmidt numbers in each zone of structured or unstructured grids.
  • Modified keywords:
    • ARBITRARY INFLOW
      • HOLD_FLOWRATE can now be used to specify an inflow flow rate.
      • HOLD_MASS value can now be used to specify an inflow flow rate [lbm/s].
      • HOLD_CURRENT will compute characteristics based on the current (frozen) inflow values.
    • CHEMISTRY
      • FINITE RATE
        • NOREACT will turn off reactions in specified zones, but still compute the convection and mixing.
    • DQ LIMITER syntax has changed.
      • POINTWISE is the new and more descriptive name for the NXAIR option.
      • PRINT is a new option to enable/disable limiter messages.
    • K-E COMPRESSIBILITY syntax has changed and additional compressibility corrections are available.
    • STAGES has some additional Runge-Kutta schemes available.
    • MASS FLOW FREQUENCY parameter now also controls how often the ARBITRARY INFLOW HOLD_MASS condition is applied.
    • TURBULENCE MODEL now supports the following new models:

             {BSL  | MENTER-BSL}                   [k-w]
             {NTT  | NAGANO-TAGAWA-TSUJI}          [k-e]
             {AKN  | ABE-KONDOH-NAGANO}            [k-e]
             {SZS  | SO-ZHANG-SPEZIALE}            [k-e]
             {SSGZ | SO-SARKAR-GERODIMOS-SPEZIALE} [k-e]
             {CRAFT-TECH}                          [k-e]
           

    • WALL TEMPERATURE FIXED will attempt to hold the temperature on a viscous wall at the current value.
    • WRITE will now output the following additional variables:
      • TOTALS outputs total pressure, total temperature, and total enthalpy.
      • PITOT outputs pitot pressure.
      • PRANDTL outputs turbulent Prandtl number.
    • VISCOSITY CO2 now provides table lookup capability for CO2 gas.
  • Deleted keywords:
    • The K-E LINEARIZATION keyword option has been removed. All structured k-ε models use an approximate linearization.
  • Test options:
    • 33 - Hold the temperature on a viscous wall at the current value, using the conjugate heat transfer model.
    • 34 - Coefficient for the streamwise vorticity term when using SST net vorticity transport (NVT) option of TEST 44.
    • 38 - Coefficient for the streamwise velocity gradient term when using SST net vorticity transport (NVT) option of TEST 44.
    • 39 - Used with the BSL and SST turbulence models to specify freestream sustainment terms.
    • 41 - Coefficient to weight the density gradient term when using SST net vorticity transport (NVT) option of TEST 44.
    • 43 - Specify an alternate value for σ_ω2, the diffusion coefficient used in the ω transport equation of the BSL and SST turbulence models.
    • 44 - Controlls modifications of the SST turbulent kinetic energy source term referred to as Net Vorticity Transport (NVT) modifications.
    • 45 - Activates some limiters recommended by Menter after the initial development of the the BSL and SST turbulence models.
    • 76 - Use air C_p for implicit chemistry terms.
    • 92 - Added mode < 0 to perform point implicit integration for approximate chemistry source terms.
    • 188 - Added mode 2 which controls how structured-grid SA/SST/BSL turbulence model data is passed across coupled zones.

2 June 2016

• Added information about new CFPOST variables.
  • Boundary layer incompressible momentum thickness.
  • Strain and rotation rate tensor components.
  • Turbulent stress tensor components.
  • Non-dimensional near-wall turbulent k⁺ and ε⁺.
  • Variables can now be preceeded by a minus sign, which is particularly useful with the turbulent stress components.

1 Apr 2016

• Official publication is now available:
  • "Wind-US User's Guide Version 3.0," Dennis A. Yoder, NASA TM-2016-219078, Mar 2016.
  Many thanks to all those who contributed. There were many changes, as described below.
• Updated the Wind-US 3.0 documentation to improve the keyword descriptions and provide additional details as described below. There is relatively little change in the capabilities of the code.
• Numerous keywords were updated to more clearly identify the default setting. Users can look for underlined words within the keyword summary and/or search for the word "default" within the text.
• Updated several keywords to use the zone_selector notation. The functionality of the keywords remains unchanged. Note that some of these keywords require the zone_selector. Others allow it to be optional. In some cases, the ZONE keyword must be included.
  • BOUNDARY-DAMP has a required "ZONE zone_selector".
  • BOUNDARY TVD has an optional "[zone_selector [BOUNDARY ...]]".
  • CHEMISTRY ... FIXED has a required "zone_selector".
  • CHEMISTRY ... OMIT has a required "ZONE zone_selector".
  • COMPRESSOR FACE has a required "zone_selector".
  • DOWNSTREAM MACH has a required "zone_selector".
  • DOWNSTREAM PRESSURE has a required "zone_selector".
  • MASS [FLOW] has a required "zone_selector".
  • OUTFLOW has a required "zone_selector".
  • REINITIALIZE has a required "zone_selector".
  • RELAX COUPLING has an optional "[ZONE zone_selector [[BOUNDARY] ...]]".
  • RHS has an optional "[ZONE zone_selector]".
  • SOLVER-STAGES SET RHS has an optional "[ZONE zone_selector]".
  • TDA_INVALID has a required "zone_selector".
  • TDA_VALID has a required "zone_selector".
• Since many keyword options are now applicable to both structured and unstructured grids, the documentation has been reformatted to reduce the redundancy of the keyword descriptions.
  • ARBITRARY INFLOW
  • MASS FLOW
• Updated the descriptions of the freestream turbulence keywords to better explain how turbulence values are used to initialize the flow and apply freestream boundary conditions.
  • FREE_K, FREE_OM for the SST turbulence model.
  • K-E FREE_K, K-E FREE_MUT for the k-ε turbulence models.
• ARBITRARY INFLOW ... val_k [val_om] keyword description was updated to better explain how turbulence values are used to initialize the flow and apply inflow boundary conditions.
• ARBITRARY INFLOW ... DIRECTION CYLINDRICAL keyword description was updated to better explain the use of an arbitrary cylindrical axis. An illustration and examples have been added.
• BLEED figures have been improved.
• BLOW keyword description was updated to better explain the different ways for specifying the flow angles. Figures have been added to illustrate the flow angles.
• CONVERGE keyword description was updated to include its role in dual time stepping.
• DEBUG 107 was added to compute the cell centroid for unstructured grids from the average of the nodal coordinates.
• HOLD {TOTALS|CHARACTERISTICS} for unstructured grids now works with chemistry.
• IMPLICIT BOUNDARY now works for multi-species flows.
• IMPLICIT ORDER has been obsolete for some time now. The same capability is available using the IMPLICIT TIME option within the TEMPORAL input block.
• LOADS keyword description was updated to better explain the output written to the *.lis file.
• REL-ROT-ZONE keyword documentation has been re-instated, since the relative rotating zones capability is working once again. Some of the keyword syntax has changed, and new options are available. The example has been updated to include instructions for setting the zone coupling with the current version of GMAN.
• SOLVER-STAGES ... SET TIME LEVELS applies to both Newton iteration and dual time stepping.
• TEMPORAL keyword documentation now includes an example.
• TEST 4 was reserved for future use.
• TEST 22 was added to compute the corrected mass flow rate based on area-averaged total pressure and temperature rather than area-averaged static values.
• The VISCOSITY and CHEMISTRY ... VISCOSITY keywords now allow use of the constant viscosity model with unstructured grids.
• Updated the Tutorial section of the Wind-US User's Guide to be consistent with Wind-US 3.0. Also added notes on how to make simple convergence plots with CFPOST.
• Updated the Physical Modeling section of the Wind-US User's Guide to clarify that axisymmetric cases assume the circumferential velocity is zero. To simulate swirl, one must model a 3D sector.
• Updated the Tips for Using the Unstructured Solver to include advice on simulating two-dimensional and axisymmetric flows.

26 Aug 2015

• Updated the documentation for the utilities.
  • Indicate utilities that apply only to structured or unstructured grids.
  • Indicate utilities that are depricated or obsolete.
  • Revise navigation links to only include supported utilities.

24 June 2015

• Official release of Wind-US 4.0.
• A list of the major changes from previous versions is available.
• Documentation updates will be comming soon.

30 Nov 2011

• Added some Tips for Using the Unstructured Solver.

15 Nov 2011

• Updated the documentation for cfpart and CFPOST to include instructions for using named surface groups.
• Updated the CFPOST documentation for using a common grid (.cgd) file as an interpolation rake.

1 Nov 2011

• Official release of Wind-US 3.0.
• Updated the Wind-US Documentation Home Page and the User's Guide for Wind-US 3.0. Documentation for older versions still exists, but is no longer being maintained.
• A list of the major changes from previous versions is available.

23 May 2011

• Added info about compiling and running on the NASA Advanced Supercomputing (NAS) systems. Please see the updated build instructions.

22 Oct 2010

• Added info about a new feature in CFPOST 4.16 to output an arbitrary number of variables to a PLOT3D function file. Can also output the function file variable names.

4 Sep 2009

• Updated the URL for the NPARC Alliance Home Page.

27 May 2009

• Changed contact person for the Wind-US documentation.

22 May 2009

• Modified the description of the REINITIALIZE keyword to note that the IJK_RANGE option on the REINITIALIZE keyword allows reinitialization within regions specified in the ARBITRARY INFLOW keyword block using XYZ_RANGE and RTZ_RANGE keywords, for both structured and unstructured grids, not just within structured grid IJK_RANGE regions.
• Modified the description of the cfaverage utility to add the new capability to accumulate values from multiple files, then compute the averages by finalizing the output file. Also added the RMS option, which was previously undocumented.

19 May 2009

• Added documentation for the utilities cflistnum, cfpart, and cfspart. cfpart is now the recommended utility for partitioning a single-zone unstructured grid into multiple zones, replacing usplit-hybrid.

9 Feb 2009

• In the Wind-US User's Guide, the description of modes 1 and 2 for TEST option 2 were switched.

8 Dec 2008

• In the MADCAP User's Guide, deleted references to the import and use of CAD geometry files, including IGES files, since they're not supported in the version of MADCAP distributed by the NPARC Alliance.

9 Oct 2008

• Added the -frgpts option to the decompose utility, for specifying the number of fringe planes for overlapped zones.

5 Sep 2008

• Expanded the description of the TEST 123, option, noting the differences in its effect when the MASS FLOW keyword is used, compared to the other outflow boundary condition keywords.

28 Aug 2008

• Added info about new capabilities in CFPOST, mostly related to its use for frozen and finite-rate chemistry flows.
  • The new chemistry command is used to specify the name of the .chm file containing thermodynamic properties, reaction rates, and transport properties for each of the species. For frozen and finite-rate chemistry (i.e., when ipar(10) = 3 in the .cfl file), this file must be specified.
  • Added a chemistry option to the show and clear commands, to show and clear the chemistry data.
  • Added a few chemistry-related variables to the variable command.
  • Modified the equations in the Variable Derivations section to include those used for frozen and finite-rate chemistry.
  • Also added a section describing the thermodynamic functions Cpfun, Hfun, and Sfun used in some of the equations.
  • Expanded (and corrected some errors) in the Variable Derivations section. When a variable may be computed in multiple ways, depending on the information available in the solution file, multiple equations are now shown, in the order that CFPOST attempts to use them.
  • Added a nowrap|wrap option to the list command, to specify whether or not lines are to be wrapped, and at what line length.

  Thanks very much to Dennis Yoder for supplying all the above documentation.

23 July 2008

• Modified the description of the ARBITRARY INFLOW keyword to note that the BLEND option is only available for perfect gas flows.

16 July 2008

• Modified each page to use server-side includes for adding the footer.

30 May 2008

• Modified the description of the ARBITRARY INFLOW keyword block to note that when species mass fractions are specified, the order must be consistent with the order in which the species are listed with the SPECIES keyword in the CHEMISTRY keyword block.

29 Apr 2008

• In the GMAN User's Guide, rewrote the subsection describing how to set boundary conditions, splitting it into separate descriptions on how to Set a Boundary Condition and Change a Boundary Condition. Also added more detail (supplied by Bob Bush) on setting coupled and bleed boundary conditions.

28 Apr 2008

• In the CFPOST User's Guide, modified the descriptions of the file specification commands to add an option to open the file(s) in read-only or read-write mode. This option only applies to CFPOST versions 4.1 and later. Earlier versions automatically open the file in read-write mode, and a file read error will occur if the mode option is used.
  
  Also modified the description of the calculate command to note that the .cfl file must be opened in read-write mode.

14 Mar 2008

• Modified the description of the wind script in the Wind-US User's Guide, removing (for now) the -convcheck and -stats run monitoring options since they don't currently work.
• Added documentation for the POSTPROC keyword block, required when the -genpost run monitoring option is used.
• Modified the description of the -loads run monitoring option to note that it won't work with versions of the Wind Scripts older than 2.0.82, corresponding to Wind-US versions obtained before the afternoon of 14 Mar 2008.

3 Mar 2008

• Added documentation for resplt.pl, the Perl script that can be used as a replacement for the older Fortran version of resplt. Except for the "average mode" capability, resplt.pl has the same or more capability as the older version, and can be run from the command line as well as interactively. Documentation for the older version of resplt is still available, at least for now, because its "average mode" capability has not yet been implemented in resplt.pl.

18 Jan 2008

• Rewrote the Installing the Application Distributions section of the Wind-US Installation Guide.

9 Jan 2008

• Added a note in the documentation for cfreset_iter about using the WALL SLIP keyword when restarting a structured grid case with viscous walls after using cfreset_iter.

5 Dec 2007

• Added an "external link" symbol () to all links to non-NASA sites, per NASA policy.

26 Nov 2007

• In the "Building Wind-US" section of the Wind-US Installation Guide, removed the item about modifying the definition of ARCHCFLAGS in the system-dependent makefile in source/makefiles/pvm_conf/, or setting the PVM_RSH environment variable, to define the remote shell command to be used for PVM message passing. That's done now by using (or not using) the -usessh option with the wind script.

20 Nov 2007

• In the "Parallel Processing" section of the User's Guide, added documentation for the #master directive in the .mpc file, which allows a system different from the originating system to be used as the master.

25 Sep 2007

• Added documentation for the usplit-hybrid utility.

21 Sep 2007

• Modified the description of the windver script in the Wind-US User's Guide to update the example, and to correct the procedure used to get the version number for executables in non-standard locations. (I.e., you can't use "-binroot" with windver any more, but you can do "wind -version -binroot ..." instead.)

29 Aug 2007

• Added a (tiny bit) more detail to the description of the detached PRNS turbulence model

14 Aug 2007

• Corrected the description of the REINITIALIZE keyword. This was changed in Wind-US 2.146, and is not backward compatible, but documentation of the new syntax slipped through the cracks.

9 Aug 2007

• Modified the description of the HISTORY keyword and the thplt utility to describe their use with multiple time history files.

7 Aug 2007

• Updated the Wind-US Utilities Guide for consistency with the current versions of the various utilities, and added examples to several utilities that didn't previously have them.
• Modified the description of the HISTORY keyword in the User's Guide to note that the current date and time are automatically appended to the end of the file name, and to remove the paragraph about the file being extended when a restart case is run, since that's no longer true.

19 July 2007

• Updated the MADCAP User's Guide for consistency with the current version. Note that some of the help files currently distributed with MADCAP (i.e., those accessible from the "Help" entry in the MADCAP main menu bar) are out of date. The MADCAP User's Guide is currently more up to date than the help files, although most of the differences are relatively minor. The most significant differences are in the description of the procedure for setting boundary conditions under the Boundary Conditions Menu, and the Regrid Surface or Curve option under the Grid Generation Menu.

27 June 2007

• Updated the figures and instructions in the Wind-US Installation Guide for consistency with the Wind-US 2.0 release.

25 June 2007

• Updated the Wind-US Documentation Home Page and the User's Guide for Wind-US 2.0. Documentation for Wind-US 1.0 still exists, but is no longer being maintained.
• Removed the beta documentation.
• Made current alpha documentation identical to the just-released Wind-US 2.0 documentation.
• In the variable list in the CFPOST User's Guide, added the variable ω. (Thanks to Steve Miller for noticing that it was missing.)

21 June 2007

• Re-modified the description of the MAX_WALL_DISTANCE keyword to provide more detail and emphasize its importance.

20 June 2007

• Added documentation for the utilities USintrpltQ, used to interpolate a solution from one unstructured grid to another, and mpigetnzone, used to get the number of zones in a .cgd file.

18 June 2007

• Modified the description of the MAX_WALL_DISTANCE keyword. New options have been added, and the syntax and default have changed. Either GRID_UNITS or BOUNDARY_LAYER_THICKNESSES (or BLT) must now follow the specified value, indicating whether the value is in grid units or "nominal" boundary layer thicknesses. The new default is 10,000 grid units, a large value intended to apply to most configurations, including free shear flows downstream of a viscous wall. However, for typical wall-bounded viscous flows, setting a smaller value appropriate for the particular geometry being computed can significantly speed up the wall distance calculation.

1 June 2007

• Added a page describing the changes made from Wind-US 1.0 to 2.0.

21 May 2007

• Changed the default for the communication directive in the .mpc file to direct.

16 May 2007

• Modified the description of the wind script options, adding more detail, adding the new options available with the new Perl scripts, and including information about specifying options using environment variables where applicable.

2 May 2007

• Added the EDC keyword in the CHEMISTRY keyword block, specifying use of the eddy dissipation concept.
• The meaning of DEBUG 34 has been reversed. The default is now to not apply limiting to the calculation of interior fluxes with unstructured grids, and using DEBUG 34 turns on the limiter.
• The Nichols-Nelson hybrid RANS/LES turbulence model may now be used with unstructured grids.

27 Apr 2007

• Added the VENKAT option to the TVD keyword for unstructired grids, for using Venkatakrishnan slope limiting.
• Added the variable VENKATPHI to the WRITE keyword, to write the limiter used in Venkatakrishnan slope limiting into the .cfl file.

30 Mar 2007

• In the variable list in the CFPOST User's Guide, corrected the name for ε. It's epsilon, not epsi. (Thanks to Steve Miller for finding the problem, and Greg Power for the correction.)

12 Mar 2007

• The units for rotation rates that are specified using the following keywords have been changed from radians/sec to degrees/sec:
  
  
  • TURNING SOLIDBODY and POWER SOLIDBODY in the ACTUATOR keyword block
  • SOLIDBODY and ROTATESOLID in the ARBITRARY INFLOW keyword block
  • ROLL
  • ROTATE

  Note that this change was made in Wind-US version 2.184, and is not backward compatible. Input data (.dat) files using these keywords with earlier versions of Wind or Wind-US will need to be changed to run with Wind-US 2.184 or later.

6 Mar 2007

• Updated the URL for the NPARC Alliance Home Page.

7 Feb 2007

• Added the EXTRAPOLATE keyword, used to specify the extrapolation order at freestream and arbitrary inflow boundaries. The default is now zeroth order.

31 Jan 2007

• Added documentation for the cfrevert utility used to convert a .cfl file created by Wind-US 2.0 to one that can be read by Wind-US 1.0.

25 Jan 2007

• In the Wind-US User's Guide, added more (i.e., some) detail to the description of the GRADIENTS keyword, and added [zone_selector] to the syntax since it's now zonal. Thanks to Andy Dorgan for suppling the info.
• Eliminated the TURBOSPEC keyword block, at least for now, since there are some problems with the coding currently used to implement it.

22 Jan 2007

• In the Wind-US User's Guide, added the options NO_NEWTON and NO_TIME to the SAVE keyword in the TEMPORAL keyword block, to specify that the extra time levels for Newton iteration and second-order time differencing should not be retained at the end of a run. The default is now to save the data for second-order time differencing, but not for Global Newton iteration. In addition, the SAVE keyword may now be specified outside the TEMPORAL keyword block.

18 Jan 2007

• In the Wind-US User's Guide, corrected an error in the description of the calculation of inflow turbulence levels when a value of val_k < 0 is specified with the UNIFORM (and other) keywords in the ARBITRARY INFLOW keyword block. Corrected a similar error for the calculation of freestream turbulence levels for the SST model with input from the FREE_K keyword.

11 Jan 2007

• In the "Parallel Processing" section of the Wind-US User's Guide, added or modified the descriptions of the following .mpc file directives:
  
  
  • communication - New directive allowing messages and boundary condition data to be sent directly between workers.
  • packmode - New directive specifying the packing mode used when transferring data between the master and workers. Note that the default has changed; packmode memoryxdr must now be specified when running on a cluster of networked systems with different internal data formats.
  • assignment mode - New options mpiordered and combined.
  • route - More detailed description of the options.

8 Jan 2007

• In the ARBITRARY INFLOW keyword block, added the RTZ_RANGE keyword, which is analogous to the XYZ_RANGE keyword, but allows the bounding box to be specified in cylindrical coordinates. Also added the option CYLINDRICAL to the DIRECTION keyword, which allows angles of attack and yaw to be specified in cylindrical coordinates. And, the DIRECTION keyword is now applicable to both structured and unstructured grids.
• In the MOVING WALL keyword, the TRANSLATE X and SPIN X options have been restored, and analogous options have been added for the y and z axes. However, when SPIN X (or Y or Z) is specified, the rotation rate is now in degrees per second, not radians per second.
• In the TEMPORAL keyword block, added the keywords NEWTVARS and SORDTVARS. These are analogous to the existing CFTVARS keyword, but apply independently to Global Newton iteration and second-order time differencing, respectively. The default is now to store the extra time levels for Newton iteration in the .cft file, and for second-order time differencing in the .cfl file.

21 Dec 2006

• Added the VISCOUS_JACOBIAN option to the IMPLICIT keyword for unstructured grids.
• For the NAVIER-STOKES ITERATIONS keyword, removed the restriction to structured grids.
• Several changes in the TURBULENCE keyword description.
  
  
  • Eliminated separate sections for structured and unstructured grids.
  • The ITERATIONS option applies to both structured and unstructured grids.
  • The ompressibility corrections for the SST model, and the options affecting them, now apply to both structured and unstructured grids.
  • Freestream k and ω (i.e., FREE_K and FREE_OM) can now be specified with the SST model for both structured and unstructured grids.
  • Freestream eddy viscosity (i.e., FREE_ANUT) can now be specified with the Goldberg model.
  • The Spalart DES model, and the SST model with the ε limiter, can now be used with both structured and unstructured grids.
  • Added a paragraph to the description of the MAX_WALL_DISTANCE keyword about its use for free shear layers.
  • Added the MDES keyword, for Shih's modified DES model.
  • Added the PRNS and DETACHED-PRNS keywords, for the PRNS and detached PRNS models.

18 Dec 2006

• Added the EQUILIBRIUM option to the WALL TEMPERATURE keywords, used to specify an equilibrium wall temperature. Also added note to the BL_INIT keyword saying that it couldn't be used with WALL TEMPERATURE EQUILIBRIUM.
• Added the BLEED WALL and BLOW WALL keywords, used to turn bleed/blowing off in a specified region.

12 Dec 2006

• Added the SOLVER-STAGES keyword, used to define input for a staged solution.

11 Dec 2006

• Eliminated the TIMEMARCHING keyword, and modified the CFL keyword description. The keywords used to distinguish between specification of a CFL number and a physical time step is now the same for both structured and unstructured grids.
• Eliminated the CELLCENTERED modifier in the RHS keyword for unstructured grids.
• Modified the NEWTON keyword in the TEMPORAL keyword block for specification of the physical Newton time step.

8 Dec 2006

• The PRECOND keyword now uses the syntax PRECOND HYPERCOMP eps.
• Several changes to the MOVING WALL keyword. Can now translate in the i direction; or translate and/or spin in any direction in physical space. All but translation in the i direction are available for both structured and unstructured grids. The TRANSLATE X and SPIN X options have been removed.
• For the FIXER keyword with an unstructured grid, the option FIRST ORDER was added to switch to a first-order scheme at bad cells, and MAX was added to specify the maximum number of bad cells allowed and when to start checking. The PRINT option no longer applies to unstructured grids.
• Added HEATFLUX and FILTER variables to the WRITE keyword.
• Removed the limitation of 32 separate processes with the SPAWN keyword.
• Added the FIXED_CL keyword, to vary the angle of attack to obtain a specified lift coefficient.

5 Dec 2006

• For the DEBUG keyword, a bit more detail about options 11, 18, and 19, and new options 20 and 21 for modifying the time step used for the turbulence equations.
• Added notes to the GRAVITY and ROTATE keywords that they can't be used with Van Leer differencing.
• For the ARBITRARY INFLOW keyword block, noted that VORTEX, SOLIDBODY, and ROTATESOLID can only be used with a perfect gas.
• For the LAX DAMPING keyword, noted that the flux dissipation parameter only applies with pre-conditioning, and eliminated statement saying that the dissipation parameters were set equal to 0.0 if the keyword was used without specifying values.
• Modified the description of the TVD keyword for unstructured grids for consistency with Wind-US 2.157.
• Reorganized (a little) the description of the TURBULENCE keyword, and the various additional keywords that may be used with different models, trying to make the additional keywords more visible. Changed the description of MAX_WALL_DISTANCE to note that it's now valid for both structured and unstructured grids, and for the k-ε models.
• Modified the description of the SCHMIDT keyword to remove the restriction to unstructured grids.
• Modified the description of the CHEMISTRY keyword block for consistency with Wind-US 2.157. The SPECIES keyword is now used to specify both the order of the species and their mass fractions (MASS FRACTIONS is still there, but discouraged); the new keyword EQUILIBRIUM is required for Liu-Vinokur equilibrium chemistry; and the new keyword DIFFUSION may be used to specify the type of species diffusion.
  
• Added TEST option 14 (to add pressure to the .cfl file for structured grids) and TEST option 15 (to modify the grid filter used in the SST model with LESB). Deleted TEST option 4.

3 Nov 2006

• Various updates in the Wind-US User's Guide for consistency with the TEST and DEBUG options in the current version of Wind-US.

8 Aug 2006

• Updated the Scripts section in the Wind-US User's Guide for consistency with the current versions.

20 July 2006

• In the Wind-US Installation Guide, updated the Obtaining Wind-US and the Tools section, including screen shots, etc., for consistency with the new SYSTEM/SYSTEM_CPU naming scheme. Added more detail on Installing the Application Distributions, including a new sub-section on Using Symbolic Links for Similar Systems. Updated the section on Installing the Build Distributions for consistency with the new SYSTEM/SYSTEM_CPU naming scheme, and added info about the PRECISION definition in Makefile.configure.

12 July 2006

• Expanded the discussion of Remote Shell Commands in the "Parallel Processing" section of the Wind-US User's Guide, in particular adding details about running Wind-US in parallel using ssh.

26 June 2006

• Changed the default for the ENTROPY FIX keyword to ON.

25 Apr 2006

• Changes in descriptions of the CFL, DEBUG, IMPLICIT, PRECOND, RHS, SMOOTHING, TURBULENCE, and TVD keywords for consistency with Wind-US 2.110.
• Added descriptions of new keywords ENTHALPY-PRESERVING, GRADIENTS, LAX DAMPING, and TEMPORAL.

12 Apr 2006

• Changes in descriptions of the test options and the DEBUG keyword for consistency with Wind-US 2.109.

6 Mar 2006

• In the Common File User's Guide, expanded the discussion of Reference and Scaling Data, and moved it out of the "Basic Concepts" section.

3 Mar 2006

• Added a couple of paragraphs in the description of the cfcnvt utility about the units that are assumed when converting to a common file from another format.

26 Jan 2006

• Minor mods/clarifications for a few keywords in the User's Guide, mostly in syntax descriptions that didn't correctly mark optional words as optional.
• Corrected error in the LORENTZ keyword description in the MFD keyword block. The file name is always FOR015, and can't be user-specified.
• Corrected the description of the format for user-specified profiles with species in the ARBITRARY INFLOW keyword block.

3 Jan 2006

• Updated all links to the NASA Privacy and Accessibility Policies in the page footers to conform with the latest NASA requirement.

20 Dec 2005

• Added TEST option 31 (to use a quadratic fit for normal derivative boundary conditions) and TEST option 74 (to include k-direction spacing when computing the minimum time step in 2-D flows).
• Eliminated TEST options 53, 147, 148, and 198.

13 Dec 2005

• In the "Convergence Monitoring" section of the User's Guide, modified the discussion of Residuals to clarify things a little.

2 Dec 2005

• Corrected an error (or at least a misleading statement) in the instructions for installing the build distributions in the Wind-US Installation Guide. In the definitions of CFDROOT and TOOLSROOT, the full path name of the installation directory should be used, not just the directory name.

28 Nov 2005

• Changed the figures in the Obtaining Wind-US and the Tools section of the Wind-US Installation Guide to use actual screen images instead of facsimiles.

22 Nov 2005

• Eliminated most usage of images and "words" for equation elements throughout the HTML version of the Wind-US documentation, in favor of the appropriate HTML character entities. E.g., instead of using a GIF image or the word "rho" to represent the Greek letter rho, the character entity &rho; is used instead. Images were originally used because HTML browsers typically didn't support character entities for many of the symbols that were used. Current-generation browsers, however, are much better. Mozilla Firefox 1.0.7 supports all the character entities used in the Wind-US documentation, and Microsoft Internet Explorer 6.0 supports all but a couple. See the list of standard HTML 4.0 character entities for Symbols and Greek Letters to see how they are displayed in your browser.

16 Nov 2005

• Added documentation for CFNINF in the Common File User's Guide.

15 Nov 2005

• Modified the figures in the Obtaining Wind-US and the Tools section of the Wind-US Installation Guide for consistency with the recently updated IVMS web site.

2 Nov 2005

• Added LOADS to the list of keywords that aren't regenerated correctly in the updated .dat file by the decompose utility.

5 Oct 2005

• Added the value "2" to the LIU-VINOKUR keyword in the CHEMISTRY keyword block. Currently, the value 2 must be specified, even though it's the only valid option.

22 July 2005

• Added a bit to the description of CFL# keyword, MODE 2, to clarify that the iteration values are cumulative from the initial run.
• Added an example to the description of the fpro utility.

15 July 2005

• Added a paragraph on the Wind-US Documentation Home Page about the NPARCtalk mailing list, for discussion of NPARC Alliance software, including Wind-US and its associated utilities.

14 July 2005

• Corrected an error in the Common File User's Guide. In the Node Header Definitions section, the unstructured grid type in the zone node header for Wind-US is stored in IPAR(63), not FPAR(63).

1 June 2005

• Added the FIXED keyword to the CHEMISTRY keyword block, allowing fixed chemistry composition in specified zone(s). Also added a few statements about which keywords are allowed with which other keywords.

31 May 2005

• Added a note to the CFL keyword, for unstructured grids, saying that with local time stepping, the size of the time step is automatically limited to the largest time step in the grid that corresponds to a CFL number of one. This replaces the functionality previously specified using the DTRATIO option with the TIMEMARCHING keyword.
• Removed the DTRATIO option for the TIMEMARCHING keyword.
• Modified the description of DEBUG option 50, which specifies use of the reformulated version of the unstructured solver, to say that:
  
  
  • DEBUG option 14, specifying superbee slope limiting, may now be used.
  • Pre-conditioning for low Mach number flows is not yet implemented.
  
  
• Added DEBUG options 51 and 52.

13 May 2005

• Added DEBUG option 50, specifying use of the reformulated version of the unstructured solver.
• Modified some keyword descriptions to describe their use with the reformulated unstructured solver, where different from the original unstructured solver. See the individual keyword descriptions for details.
  
  
  • For the IMPLICIT keyword, noted that the JACOBIAN PER CELL option is not supported.
  • For the RHS keyword, noted that only the RUSANOV scheme is currently supported.
  • For the DQ LIMITER keyword, the OFF option really does mean no limiting, not use of the default limits.
  • The FIXER keyword now applies to unstructured grids when the reformulated solver is used.
  
  
• Modified the IMPLICIT keyword description for unstructured grids to add IMPLICIT NONE, to specify use of an explicit unstructured solver, and to change the default for SAVE_JACOBIAN. These changes apply to both the original and reformulated version of the unstructured solver.

20 Apr 2005

• Corrected a typo in the GMAN User's Guide. For the CKMODE BOUNDARY command, the BL-COUPLED parameter was wrongly listed as BL_COUPLED.

5 Apr 2005

• In the Common File User's Guide, made a couple of minor corrections to the Subroutine Descriptions, and added a bit in the list of Wind-US Application Specific Variables for unstructured grids.

23 Mar 2005

• Re-organized the Parallel Processing section of the User's Guide, adding more detail and trying to clarify things.

18 Mar 2005

• In the User's Guide, modified the description of USERCHEM in the "ARBITRARY INFLOW" keyword block to remove the part about the non-existent TEST option 75.

28 Feb 2005

• In the User's Guide, modified the Boundary Conditions section, and the description of the "PERIODIC" keyword to note that periodic boundary conditions are currently supported only for structured grids.

17 Feb 2005

• Added a bit to the description of the CGNSBASE keyword to note that the extensions for the grid and flow files are .cgd and .cfl for both CGNS and common files.

14 Feb 2005

• Corrected an error in the Parallel Processing section of the Wind User's Guide. In the .mpc file, the default is route direct, not route indirect.

27 Jan 2005

• Added the new XYZ_RANGE keyword in the ARBITRARY INFLOW keyword block, for specifying initial conditions in a user-specified bounding box in both structured and unstructured grids.

26 Jan 2005

• Modified the ROTATE keyword description, deleting the "zone_selector", due to problems in the re-normalization capability that were introduced when zonal rotation was added. Also added a note in the description of the REL-ROT-ZONE keyword saying that it won't work until the zonal rotation capability is restored.

17 Dec 2004

• Added a note in the Building Wind-US section of the Wind-US Installation Guide, about modifying the system-dependent makefile for systems that don't support the Fortran long integer data type.

16 Dec 2004

• Changed the phone number for NPARC Support to (931) 454-7885.

15 Dec 2004

• Added the ENTROPY FIX keyword, intended to help prevent expansion shocks when using the Roe scheme. This keyword has actually been available since Wind 2.0 was released, but somehow escaped being documented.
• Added DEBUG option 39, for computing wall distances the "old" way (i.e., on a zonal basis). Also modified the descriptions of DEBUG options 2 and 10, due to recent code mods.
• Modified the description of the UNSTEADY keyword in the ARBITRARY INFLOW keyword block to note that up to four perturbations may now be specified.
• Modified the description of the MAX_WALL_DISTANCE keyword, used with the TURBULENCE keyword. It now applies to both the Spalart-Allmaras and SST models for unstructured grids, and the definition of the default value has changed.

2 Dec 2004

• Modified the description of the ARBITRARY INFLOW keyword block, to:
  
  
  • Note that total conditions may be specified for real gases in structured grid computations, with the caveat that the user must specify a value for γ consistent with the gas being used.
  • Add the BL_HEIGHT option to the TURBULENCE keyword.
  
  
• In the TURBULENCE keyword description for unstructured grids, removed the note saying that the Goldberg pointwise model shouldn't be used.

29 Nov 2004

• Modified the description of the USURFACE keyword in the ARBITRARY INFLOW keyword block for unstructured grids, to add the FROZEN option.

18 Nov 2004

• In the MFD keyword block, added the EXTERNAL keyword, for reading the MFD field, computed by an external solver, from the .cfl file.
• Added the TURBOSPEC keyword block, specifying use of the MIT actuator duct model. (But, more detail is needed.)
• Added the WRITE keyword, used to write extra variables into the .cfl file.
• Modified the description of TEST option 67, for use with unstructured grids.

16 Nov 2004

• Modified the description of the IMPLICIT ORDER, MOVING WALL, NEWTON, and ROLL keywords, removing the restriction to structured grids.
• Modified the description of the TURBULENCE keyword, adding the SST model for unstructured grids.
• Added TEST option 19, used to add the full stress tensor to the source term for the SST turbulence model for unstructured grids.

3 Nov 2004

• Modified the description of the THERMO9 keyword in the CHEMISTRY block, to note that it can now be used for hydrogen.
• Modified the description of the HOLD keyword, and the HOLD_TOTALS keyword in the ARBITRARY INFLOW block, since total conditions may now be held (but not specified?) in multi-species flows.
• Added a couple of new modes to TEST option 71.
• Added the TURBULENCE keyword in the ARBITRARY INFLOW block, to specify an unsteady pseudo-turbulent inflow.
• Modified the description of the PERIODIC "keyword", adding the step-by-step instructions on how to set up a periodic boundary condition in GMAN (that were previously in the Boundary Conditions section).
• Added TEST options 72 and 73, with the new procedure for setting up a periodic boundary condition using fringes, and added a note to the description of the PERIODIC "keyword" about it.

27 Oct 2004

• Added notes to the descriptions of the tmptrn utility, and the TTSPEC keyword, about the non-dimensionalization of the temperature written into the .cfl file by tmptrn. Briefly, an error that was fixed in version 1.8 of tmptrn means that some versions of Wind and Wind-US will not work with temperature distributions written using tmptrn 1.8 and above. See the tmptrn documentation for details.

20 Oct 2004

• Updated the Wind-US Documentation Home Page and the User's Guide for Wind-US 1.0. Documentation for Wind 5.0 still exists, but is no longer being maintained.
• Removed the beta documentation.
• Made current alpha documentation identical to the just-released Wind-US 1.0 documentation.
• Added a list summarizing the changes made from Wind Version 5.0 to Wind-US 1.0.
• Updated the instructions in the Wind-US Installation Guide as needed for the Wind-US release.

1 Oct 2004

• Corrected some errors in the table of conversion factors in the Common File User's Guide. For the turbulence variables epsilon, rho*k, and rho*epsi, the numeric values were correct, but the units shown were wrong. Thanks to Jon Berndt for spotting the error.

23 Sept 2004

• Modified the description of the resplt utility to describe the zone averaging capability, and the NEWTON NS and Time History menu choices.
• Modified the description of the cfsplit utility to add the FRGSIZ keyword, used to specify the number of planes to create fringe points on when OVERLAPPING split mode is used.
• In the Installing the Build Distributions section of the Wind Installation Guide, the note about increasing the kernel variable ncargs on SGI systems has been deleted, since the change to the Makefiles in Wind-US 1.88 makes it unnecessary.

22 Sept 2004

• Modified the CFPOST User's Guide to add the following new options and commands.
  
  
  • The ptbypt option to the integrate flux and integrate volume commands, to specify printout of mass flux for each cell or face
  • The consaverage option to the integrate flux and integrate volume commands, specifying that conservation averaging should be used for flux integration
  • The T0 option to the boundary layer edge command, to specify the boundary layer edge in terms of total temperature
  • The maxdist dist option to the bledge command, to specify the maximum distance allowed for the boundary layer edge in the interpolation file
  • The crinkle command, to create crinkle planes

21 Sept 2004

• Modified the SPAWN keyword description to note that the frequency is in terms of time levels when Newton iteration is used.

17 Sept 2004

• Modified the description of the USURFACE keyword in the ARBITRARY INFLOW keyword block for unstructured grids, to note that MASS may only be used for perfect gases, and that the total temperature must be specified, not static.
• Modified the syntax for the FREESTREAM keyword to indicate that either STATIC or TOTAL must be specified.
• Added DEBUG option 38, to not abort if the specified mass flow at arbitrary inflow boundaries (USURFACE MASS in the ARBITRARY INFLOW keyword block), becomes supersonic.

9 Sept 2004

• Modified the description of the USURFACE keyword in the ARBITRARY INFLOW keyword block for unstructured grids, to note that when MASS is used a static temperature must be specified, and that values must be specified for alpha and beta, but they are ignored.

7 Sept 2004

• Added a list summarizing the changes made from Wind 5.0 to Wind-US 1.0.

16 Aug 2004

• Modified the MASS FLOW keyword description to note that the associated pressure is under-relaxed with unstructured grids.
• Made the following additions/changes to the DEBUG options affecting unstructured grids:
  
  
  • Added DEBUG option 33, to prevent the application of limiting at coupled boundaries
  • Modified DEBUG option 34, so that it now prevents the application of flux limiting for interior fluxes
  • Changed TEST option 50 to DEBUG option 36, which, for specified pressure at outflow boundaries (the DOWNSTREAM PRESSURE keyword), applies the pressure immediately, without under-relaxation
  • Added DEBUG option 37, which, for specified mass flow at outflow boundaries (the MASS FLOW keyword), applies the associated pressure immediately, without under-relaxation
  
  
• Modified the description of GENPLOT files in the CFPOST User's Guide to note that curve titles will be truncated to fit the legend, and that # may be used to start a comment.

13 Aug 2004

• Modified the HOLD keyword description slightly, since it now may be used with unstructured grids.

11 Aug 2004

• Modified the DOWNSTREAM PRESSURE keyword description to note that the specified pressure is under-relaxed with unstructured grids.
• Added TEST option 50, to apply the specified pressure immediately, without under-relaxation, at outflow boundaries in unstructured grids.

10 Aug 2004

• Modified the RHS keyword description to note that the VAN LEER scheme can now be used for multi-species flows.
• Modified the DOWNSTREAM PRESSURE keyword description to note that conditions are extrapolated by default at supersonic outflow boundaries in unstructured grids.
• Added DEBUG option 35, to use the specified pressure at supersonic outflow boundaries in unstructured grids instead of extrapolating.
• Added DEBUG option 34, to apply flux limiting to the calculation of interior fluxes in unstructured grids.

22 July 2004

• Modified the BLEED keyword to: (1) note that it can now be used with unstructured grids; (2) add the capability to use a default value for the discharge coefficient with BLEED POROSITY; (3) note that BLEED POROSITY should be used with caution until some questions about the coding are resolved.
• Modified the BLOW keyword to: (1) note that it can now be used with unstructured grids; (2) allow specification of static or total temperature with the basic BLOW keyword; (3) modify the specification of the blowing angle with BLOW and BLOW SURFACE. Blowing is also no longer limited to J surfaces, and can be in any direction, not just downstream.
• Modified the TURBULENCE keyword description for unstructured grids to note that the POINTWISE (Goldberg) model should not currently be used.
• Modified TEST option 67, added TEST option 103, and deleted TEST option 191.
• Added DEBUG option 32.

20 July 2004

• Updated the Tutorial in the WIND User's Guide for consistency with the output generated by Wind 5.

8 July 2004

• In the Common File User's Guide, fixed an error in the definitions of values stored in the zone node header for unstructured grids. IPAR(6) and IPAR(8) were switched.

24 June 2004

• Modified the LOADS keyword description to include the "SURFACE U" syntax for specifying an unstructured grid surface.

22 June 2004

• Added the THERMO9 keyword in the CHEMISTRY keyword block, to simulate AEDC's Tunnel 9 facility with pure nitrogen, using a real gas table look-up of thermodynamic properties.

7 June 2004

• Modified the wording near the end of the description of the VORTEX GENERATOR keyword block, to clarify the conditions under which the vortex generator model is expected to work.

18 May 2004

• In the Common File User's Guide, fixed an error in the definition of FPAR(63) (the unstructured grid type) in the zone node header.

17 May 2004

• Eliminated test options 1, 12, 14, 15, 16, 18, 19, 75, and 181, and added test option 60, to print a warning when the local and coupled normal velocities have inconsistent directions at a coupled boundary. For several test options, changed the list of routines in which the option is used, for consistency with Wind-US 1.49.
• Added debug options 29, 30, and 31, and changed debug option 66 to 65.
• Added MASS option to the USURFACE keyword in the ARBITRARY INFLOW keyword block for unstructured grids, which allows the direct specification of mass flow at inflow surfaces.
• In the description of the format for the thermodynamic coefficients in chemistry (.chm) files, noted that the line defining the curve type may now be omitted.

6 May 2004

• Modified the description of resplt in the Wind-US Utilities Guide, and in the Tutorial section of the Wind-US User's Guide, for consistency with version 1.8 of resplt.

22 Apr 2004

• Updated the Programming Guidelines for NPARC Alliance Software Development to for applicability to Fortran 90.
• Modified the description of MAX_WALL_DISTANCE in the TURBULENCE keyword block, to note that the distance is in grid units.

21 Apr 2004

• Corrected some errors in the description of the HOLD_TOTALS keyword in the ARBITRARY INFLOW keyword block for unstructured grids.

9 Apr 2004

• Defined TEST option 139, to turn on a grid-based flux limiter.

8 Apr 2004

• Modified the section Installing on a Windows System in the Wind Installation Guide to clarify the current support policy for Windows versions of WIND and the tools.
• Added the new keyword PRECOND, to apply matrix pre-conditioning for low Mach number flows with unstructured grids.
• Removed the FROZEN option from the USURFACE keyword in the ARBITRARY INFLOW, keyword block for unstructured grids, since it hasn't (yet) been implemented.

7 Apr 2004

• Modified the description of the Q LIMIT keyword to note that the limits are non-dimensionalized by the freestream static values.

31 Mar 2004

• In the CFPOST User's Guide, modified the description of the plot3d command to explicitly list the variables written to a standard q file.

19 Mar 2004

• Removed the web page showing access stats for the Wind documentation and validation web pages. The widespread use of indexing robots for search engines, and the local use of link validation tools, have made the access stats pretty meaningless.

16 Mar 2004

• Updated the Common File User's Guide, adding descriptions of subroutines CFCLNK (for creating a node link) and CFGTRT (for getting the file root state), and adding several variables related to unstructured grids in the Definitions for CFD Applications section.

10 Mar 2004

• Added BLOW FORCING to the BLOW keyword description, used to add an oscillatory component to the blowing velocity.
• Added MAX_WALL_DISTANCE to the TURBULENCE keyword description, used to specify the maximum distance from the wall to be used with the Spalart-Allmaras model for unstructured grids.
• Added the new keywords INITIALIZE (to set the initial velocity in grid line directions), PRANDTL (to set the laminar and turbulent Prandtl numbers), and SCHMIDT (to set the laminar and turbulent Schmidt numbers).
• Modified the description of the BLEED keyword to note that the first two forms (BLEED and BLEED POROSITY) may also be used for blowing.

2 Mar 2004

• Added mode 3 to TEST option 113, to set velocity at outflow boundaries to zero if inflow occurs.

9 Feb 2004

• Added TEST option 37, and DEBUG option 66.

18 Dec 2003

• Removed the LINE option from the IMPLICIT keyword for unstructured grids.

25 Nov 2003

• Added the compressibility factor Z to the list of variables in the CFPOST User's Guide.

13 Nov 2003

• Fixed a typo in the discussion of the SMOOTHING keyword for unstructured grids. It now correctly says "However, if the SMOOTHING keyword is used, but without specifying values, val1, val2, and val3 are set to levels more appropriate for structured grids." (Before, it incorrectly said "... for unstructured grids.")

12 Nov 2003

• Added HLLE to the list of schemes available with the RHS keyword for unstructured grids.

7 Nov 2003

• Modified the description of the Chemistry Files in the User's Guide to be consistent with Wind-US, and (hopefully) to make things clearer and more accurate.

4 Nov 2003

• Modified the discussion of the SMOOTHING keyword, to clarify the default values for unstructured grids.
• Modified the Numerical Modeling section in the User's Guide to clarify which features were available for structured and unstructured grids.

30 Oct 2003

• Added the LINE option to the IMPLICIT keyword, to specify the use of a point Gauss-Seidel scheme for unstructured grids.
• Modified the descriptions of the ARBITRARY INFLOW and REINITIALIZE keywords, to correct an error about flowfield initialization and reinitialization with unstructured grids.
• Modified the Geometry and Flow Physics Modeling section in the User's Guide to clarify which features were available for structured and unstructured grids.

23 Oct 2003

• Modified the description of the Q LIMIT keyword slightly.

21 Oct 2003

• Added to the description of the IMPLICIT keyword for unstructured grids to note that (1) SAVE_JACOBIAN must be specified if JACOBIAN PER CELL is used, and (2) that the default when just IMPLICIT UGAUSS is specified is different from the default when the IMPLICIT keyword isn't used at all.

10 Oct 2003

• Updated the keyword descriptions in the User's Guide to add the new keywords available in Wind-US, and to identify which keywords and keyword options are applicable to structured and/or unstructured grids.
• Updated all the documentation so that it now uses the new name "Wind-US".

28 May 2003

• Added a note to the WIND Utilities Guide about the utility ADFviewer from the CGNS project .

29 Apr 2003

• Added site maps for the major WIND documents.

18 Apr 2003

• In the User's Guide, modified the description of the TURBULENCE keyword, to add the compressible SST option, and the Nichols-Nelson hybrid RANS/LES model. Also re-organized things a bit.
• Modified the Turbulence Models section under Geometry and Flow Physics Modeling.

15 Apr 2003

• Modified the description of the basic BLOW keyword, due to the change allowing a single angle to be specified, which is then interpreted as the rotation about the z axis into the flow.

28 Mar 2003

• Expanded the description of the HOLD_TOTALS/HOLD_CHARACTERISTICS keywords in the ARBITRARY INFLOW keyword block, and of the HOLD keyword, to try to reduce the confusion between them.

20 Mar 2003

• Added TEST option 9, for running a verification case using the method of manufactured solutions.
• Added TEST option 62, for computing the cell areas and volumes using the old procedure from Wind 4.
• Modified the description of the TURBULENCE keyword to note that the SST model may be used in combination with inviscid or laminar flow in other zones.
• Modified the description of the TURBULENCE keyword to add the option to use the Rumsey-Gatski algebraic Reynolds stress k-ε model. For this model, a K-E CMUMIN keyword has also been added for specification of a lower limit for C_μ.
• For the k-ε models, the default for the compressibility correction has been changed from SARKAR to OFF.
• For the Chien k-ε model, the default for the variable C_μ option has been changed from ON to OFF.
• For the k-ε models, a K-E LINEARIZATION keyword has been added, allowing specification of approximate or full linearization of the source terms.
• Added two additional options to TEST option 29, for limiting the production terms in the Rumsey-Gatski k-ε model.

19 Mar 2003

• In the WIND User's Guide, added the IMPLICIT ORDER keyword, for specifying second-order time marching.
• For the ARBITRARY INFLOW and HOLD keywords, the default has been changed from holding total values to holding characteristic values.
• Removed references to the Global Newton (.cfk) file, which is no longer used.

24 Jan 2003

• In the WIND User's Guide, resurrected the BLOW MASS FRACTIONS keyword for multi-species blowing with BLOW VALVE, and the SPECIES keyword in the CHEMISTRY keyword block for specifying the species order.

17 Jan 2003

• In the WIND User's Guide, expanded the description of the VISCOSITY keyword to add the new TUNNEL9 and CUSTOM options, and to show the equations used.

14 Jan 2003

• Modified the description of the DQ LIMITER keyword, adding the option to use the Delta Q limiter from the NXAIR code.

13 Jan 2003

• Modified the description of the SPAWN keyword to note that it may now be used multiple times. With this change, using SPAWN no longer affects the checkpoint interval specified by the user in the .mpc file. When SPAWN is used, the .cfl file will be updated before each SPAWN'ed process (unless NOCHECKPOINT is specified), and also at the interval specified in the .mpc file.
• In the WIND User's Guide, modified the description of the runtest script, so that it now describes what the script actually does.

2 Jan 2003

• In the WIND User's Guide, added descriptions of the new windrun, runtest, and runtestsuite scripts.

20 Dec 2002

• Modified the description of the WIND build procedure in the WIND Installation Guide to remove the note about the installation overwriting the existing cfd.login and cfd.profile files, since it no longer does that. Similarly for the tools build procedure.

11 Dec 2002

• Modified the description of the BLOW keyword, due to the change in procedure used to specify the blowing angle when the blowing mass flux is specified directly.

4 Dec 2002

• Corrected an error in the description of the CHEMISTRY keyword block. To use Wilke's viscosity law, the keyword is WILKE, not WILKES.

15 Nov 2002

• Added a little additional detail to the description of the FIXER keyword.

8 Nov 2002

• Modified the description of the WIND build procedure in the WIND Installation Guide to note that the installation will overwrite the existing cfd.login and cfd.profile files, and that the user should thus modify the appropriate file to reset the CFDROOT value. Similarly for the tools build procedure.

7 Nov 2002

• Additional updates to the WIND Installation Guide reflecting the release of WIND 5.0.

6 Nov 2002

• Updated the WIND Documentation Home Page and the User's Guide for WIND 5.0. Documentation for WIND 4.0 still exists, but is no longer being maintained.
• Removed the beta documentation.
• Made current alpha documentation identical to the just-released WIND 5.0 documentation.
• Added a list summarizing the changes made from WIND Version 4.0 to 5.0.
• Updated the instructions in the WIND Installation Guide for Building the WIND Code and added instructions for Building the Tools.
• Modified the instructions in the WIND Installation Guide due to the change to gzip compression when downloading files from IVMS.

31 Oct 2002

• Clarified a couple of minor things in the description of the LOADS keyword.

21 Oct 2002

• Corrected an error in the description of the EFFICIENCY VORTEX keyword in the ACTUATOR | SCREEN keyword block. Also added a few notes about options that must be used in combination with other options.

30 Aug 2002

• In the Test Options section of the WIND User's Guide, noted that TEST options 4 and 158 are reserved for internal use by Boeing.

23 Aug 2002

• Modified the description of TEST option 71 in the WIND User's Guide, due to change allowing the error message to be suppressed.

19 Aug 2002

• In the "Boundary Conditions" section of the WIND User's Guide, modified the description of Periodic Boundaries to note that the boundary condition must be UNDEFINED before making it periodic.

19 July 2002

• Modified the descriptions of the GRAVITY and ROTATE keywords, noting that the coordinates of the center of rotation and the ground plane are in grid units.
• Removed the "2" from the LIU-VINOKUR keyword in the CHEMISTRY keyword block, since that's now the default.

16 July 2002

• With the recent conversion of WIND alpha to WIND beta, in preparation for the release of WIND 5.0, the documentation has also been converted. Documentation for WIND beta is at http://www.grc.nasa.gov/www/winddocs/beta/. This is currently the same as the former WIND alpha documentation. The alpha documentation still exists, but will not be updated until a new WIND alpha code is created.
  
  
• Modified the description of the BLOW SURFACE keyword, clarifying the definitions of the blowing angles. Also added TEST option 191, which may be used to specify that the blowing angles are to be measured relative to the projection of the surface normal onto a constant z plane, and to allow surface blowing with Liu-Vinokur equilibrium air chemistry.

3 July 2002

• Added TEST option 68, which may be used to issue a warning when the density is zero at a coupled boundary, ignore the coupling data, and continue. The default is now to issue an error message and abort.

28 June 2002

• Added documentation for MADCAP, originally written by G. P. Finfrock and M. S. Fisher of Boeing Phantom Works.

7 June 2002

• Added TEST option 71, allowing curve fit equations for thermodynamic properties to be used even when the temperature is outside the applicable range.

29 May 2002

• Added documentation for chmgr, the WIND Chemistry Manager, a tool for creating and manipulating chemistry (.chm) files. This was originally written by R. S. Dyer and G. P. Finfrock of Boeing, as document CM-00-04.

24 May 2002

• Modified the description of the b4wind utility for consistency with the current version, and included a link to the b4wind User's Guide by Don Todd.

21 May 2002

• Added an example to the SPAWN keyword description, showing how to save intermediate versions of the .cfl file during a WIND run.

14 May 2002

• Added a note to the RHS keyword description saying that the ROE_OVER and VAN LEER schemes cannot be used for multi-species flows.

26 Apr 2002

• Modified the syntax descriptions of the following keywords, so that the zone specification method shown is consistent with the actual coding.
  
  
  • BOUNDARY TVD
  • BOUNDARY-DAMP
  • CHEMISTRY
  • COMPRESSOR FACE
  • DOWNSTREAM MACH
  • DOWNSTREAM PRESSURE
  • IMPLICIT
  • MASS FLOW
  • OUTFLOW NON-REFLECTING
  • REINITIALIZE
  • RELAX COUPLING
  • TDA_INVALID
  • TSL
  
  
• Corrected other syntax errors for the BOUNDARY TVD and RELAX COUPLING keywords, involving the grouping of optional parameters.
• For the RELAX COUPLING keyword, corrected description of the factor used for space-marching and time-accurate calculations.
• Removed the PNSX choice in the IMPLICIT keyword description, since that's automatically set when the MARCHING keyword is used.

18 Apr 2002

• Moved the link for the "What's New" page for the developer-level WIND documentation to the main WIND Documentation Home Page.
• Fixed an error in the syntax for the LIU-VINOKUR keyword in the CHEMISTRY keyword block.

8 Apr 2002

• Added detailed instructions for installing the HTML version of the WIND documentation on a local system.

11 Mar 2002

• Added the TDA_INVALID keyword, used to reset boundary data in the .tda file

8 Mar 2002

• Fixed a typo in the descriptions of the ARBITRARY INFLOW and TURBULENCE keywords, involving the specification with val_k > 0 for the SST model. The turbulent viscosity ν_t is k/ω, not k ω.

4 Mar 2002

• Added notes to the descriptions of the ARBITRARY INFLOW and TURBULENCE keywords, noting that if inflow turbulence values are being specified for the SST model, the TURBULENCE keyword must come before the ARBITRARY INFLOW keyword block in the .dat file.

26 Feb 2002

• Corrected syntax error in the example for the BOUNDARY-DAMP keyword.
• In the Parallel Processing section of the WIND User's Guide, changed the name of the "Other Issues" subsection to "Multiple Parallel Jobs", and modified the text to note that there are no restrictions on the number of parallel jobs for a given user on a multi-processor system

6 Feb 2002

• In the CFPOST User's Guide, added the previously undocumented option to set the plot background color with the set plot command.

18 Jan 2002

• The changes from previous versions link, on the home page for WIND alpha, now includes changes from the current production version of WIND.

17 Jan 2002

• Added the VORTEX GENERATOR keyword, used to model the effects of vortex generator arrays
• Moved the discussion of the actuator disk and screen models in the User's Guide from the "Boundary Conditions" section to the "Geometry and Flow Physics Modeling" section.

8 Jan 2002

• Modified the description of the IMPLICIT keyword, adding the option to use the ARC3D 3-factor diagonal scheme as implemented in OVERFLOW

13 Dec 2001

• Added several examples to the CFL# keyword description.

12 Dec 2001

• Modified the description of the RHS keyword, adding the option to use the Roe scheme as implemented in the OVERFLOW code.

7 Dec 2001

• Modified the description of the CFL# keyword, adding the option to use the time step calculation procedure originally used in the OVERFLOW code.

20 Nov 2001

• Added the HLLE keyword, allowing the user to control the behavior of the anti-diffusion term in the HLLE scheme.
• Modified the description of the TVD keyword, adding options to use the Koren and van Albada limiters. Also modified the description of the BOUNDARY TVD keyword, to clarify its interaction with the TVD keyword.

14 Nov 2001

• Added options to the DOWNSTREAM PRESSURE keyword, allowing specification of the extrapolation order to be used (0 or 1), and adding a relaxation option when a spatially varying downstream pressure is used. Also explained a bit better the procedure used internally by WIND to apply the boundary condition.
• Added options to the MASS FLOW keyword, allowing specification of the extrapolation order to be used (0 or 1), and adding an option to modify the mass flow directly instead of iterating the downstream pressure. Also explained a bit better the procedure used internally by WIND to apply the boundary condition.
• Changed TEST option 93. As of WIND 5.99, the default has been changed to include all chemistry species diffusion terms. The previous default behavior, to ignore chemistry species diffusion, is accomplished using TEST 93 3.
• Added TEST option 67, to treat bleed boundaries as slip walls when solving the turbulence model equations. This was the default prior to WIND 5.101. The default is now to treat bleed boundaries as no-slip walls when solving the turbulence model equations.

5 Nov 2001

• Added to the description of the DQ LIMITER keyword, explaining its application when multiple sub-iterations are used for the Navier-Stokes and/or turbulence model equations.

15 Oct 2001

• Corrected error in the description of TEST option 29.

1 Oct 2001

• For the BLOW keyword, added a description of the new BLOW SURFACE capability, and modified the description of the BLOW VALVE capability.

27 Sept 2001

• Updated the Obtaining the WIND Code section of the WIND Installation Guide to document the procedures currently used to download the tools distributions.

18 Sept 2001

• Modified the description of the RESTART keyword to clarify the conditions under which a starting zone may be specified.

11 Sept 2001

• Added documentation for the HOLD keyword, which allows the user to specify whether total conditions or characteristics should be held at freestream boundaries with inflow. Note that as of WIND 5.30, the default for ideal gases is to hold total conditions, which is different from earlier versions.
• Modified the documentation for the HOLD_TOTALS and HOLD_CHARACTERISTICS keywords in the ARBITRARY INFLOW keyword block, noting that the default for ideal gases (as of WIND 5.82) is now HOLD_TOTALS.

6 Sept 2001

• Added the DIRECTION keyword in the ARBITRARY INFLOW keyword block, allowing the user to easily specify that the incoming flow is normal to the boundary face, or along the grid lines intersecting the boundary face. This replaces TEST option 176, which has therefore been removed.

16 Aug 2001

• Fixed an error in one of the examples for the ARBITRARY INFLOW keyword block, and clarified the use of the ZONE keyword. The ZONE keyword must come before the keyword defining the inflow conditions for that zone, and inflow conditions may only be specified for one zone at a time.

13 Aug 2001

• Added a statement to the RHS keyword description, noting that the HLLE scheme has a built-in entropy fix that prevents expansion shocks.
• Modified the description of TEST option 134. Extrapolation at the boundary now uses a minmod limiter, and the mode > 2 choice has been eliminated.

18 July 2001

• Corrected an error in the documentation of the K-E INITIALIZE keyword, used to specify the initialization procedure for the Chien k-ε turbulence model.

16 July 2001

• Added the previously undocumented relaxation factor that may be used with the IMPLICIT JACOBI and IMPLICIT GAUSS keywords. Due to a keyword-parsing bug, the relaxation factor is not available in versions of WIND alpha prior to 5.64.

13 July 2001

• Added a note to the documentation of the cfreset_iter utility, saying that it does not reset the time level or convergence data associated with global Newton iteration.

3 July 2001

• Added documentation for the utilities cfaverage, cfsequence, cfunsequence, and windpar to the WIND Utilities Guide. In addition, cfappend, cfnav, chmgr, and gridvel were added to the list on the WIND Utilities home page, but have not yet been documented in detail.

2 July 2001

• Modified the description of the SEQUENCE keyword in the User's Guide slightly, clarifying its effect.

21 June 2001

• Modified the description of the RHS keyword in the User's Guide. The HLLE differencing scheme is now available
  
  In addition, the syntax for the keyword has changed, and some new combinations of differencing scheme and procedure are now available. The following table lists the various combinations of RHS keyword options available using the old and new syntax. Following the usual conventions for displaying keyword syntax, optional keyword parameters are inside square brackets.
  
  

  	Old Syntax		New Syntax
  	CENTRAL SECOND		CENTRAL
  	COAKLEY FIRST		COAKLEY FIRST
  	COAKLEY SECOND		COAKLEY [SECOND]
  	COAKLEY THIRD		COAKLEY THIRD
  	ROE FIRST		ROE FIRST [UPWIND]
  	PHYSICAL FIRST		ROE FIRST PHYSICAL
  	PHYSICAL SECOND		ROE [SECOND [PHYSICAL]]
  	ROE CENTRAL		ROE SECOND CENTRAL
  	ROE MIXED		ROE SECOND UPWINDBIASED
  	ROE SECOND		ROE SECOND UPWIND
  	ROE THIRD		ROE THIRD [UPWINDBIASED]
  	ROE THIRDU		ROE THIRD UPWIND
  	ROE FOURTHU		ROE FOURTH [UPWINDBIASED]
  	ROE FOURTHC		ROE FOURTH CENTRAL
  	ROE FIFTH		ROE FIFTH [UPWINDBIASED]
  	VAN LEER FIRST		VAN LEER FIRST [UPWIND]
  	VAN LEER CENTRAL		VAN LEER SECOND CENTRAL
  	VAN LEER MIXED		VAN LEER SECOND UPWINDBIASED
  	VAN LEER SECOND		VAN LEER SECOND UPWIND
  	VAN LEER THIRD		VAN LEER THIRD [UPWINDBIASED]
  	VAN LEER THIRDU		VAN LEER THIRD UPWIND
  	VAN LEER FOURTHU		VAN LEER FOURTH [UPWINDBIASED]
  	VAN LEER FOURTHC		VAN LEER FOURTH CENTRAL
  	VAN LEER FIFTH		VAN LEER FIFTH [UPWINDBIASED]

  
  With two exceptions, the syntax used in WIND 4.0 will still work, but is no longer recommended or documented. The exceptions are ROE SECOND and VAN LEER SECOND. In WIND 4.0, these give second-order Roe and Van Leer upwind, respectively. They now give second-order Roe and Van Leer upwind-biased, with modifications for stretched grids.
  
  
• Modified the descriptions of the COUPLING, MARCHING, and TVD keywords, due to the change in the RHS keyword syntax, and to more explicitly state which explicit operators can be used.

8 June 2001

• Added TEST option 106 in the User's Guide, which specifies that the time step is to be computed at the beginning of every cycle (even when Newton time stepping is being used), instead of at the start of every iteration. This was the default behavior in WIND alpha prior to version 5.45. The default has changed, so that the time step is now computed at the start of every iteration unless Newton time stepping is being used, in which case it is computed at the beginning of each Newton time level.
• Modified the description of the SEQUENCE keyword in the User's Guide, due to the removal of the requirement that the number of grid points in the sequenced direction be 2ⁿ + 1, where n is the sequencing level.

7 June 2001

• Modified the description of the HISTORY keyword in the User's Guide, for the improved time history tracking capability in WIND alpha 5.52.
  
  
  • Time history data may now be written into the .cth file when running in parallel mode. The TEST 125 option, formerly used to write time history data into the .lis file in parallel mode, has therefore been eliminated.
  • Many additional variables may now be tracked.
  • Restart cases will now append to an existing .cth file, unless changes have been made to the HISTORY keyword input parameters or to the reference conditions.
  • Because of changes in the .cth file format, the new thplt utility must be used when post-processing a new .cth file.
  
  The improved capability required some changes to the shell scripts used to run the WIND code. The modified scripts are wind.sh, wind_input.sh, wind_jobfile.sh, and wind_miscfns.sh, and the new versions were uploaded to IVMS on May 30, 2001. If you're currently using older versions of these scripts, updated versions must be installed in order to use the improved time history tracking. For someone with user-level access to IVMS, this can be done by downloading all the scripts and copying these four into your CFDROOT/bin directory, or by downloading and installing the current WIND application distribution.
  
  
• Added documentation for thplt, the new utility that must be used to analyze the data and/or to create a GENPLOT file from the information in the time history (.cth) file.

18 May 2001

• Added documentation for the decompose and recombine utilities to the WIND Utilities Guide.

9 May 2001

• Added documentation for the empirical bleed model of Mayer and Paynter (the BLEED MODEL keyword).

19 Apr 2001

• Added description of the FREE_ANUT keyword, which may be used with the Spalart-Allmaras model to specify the freestream turbulence level.
• Added TEST option 21, allowing use of the previously-coded version of the Spalart-Allmaras turbulence model.

18 Apr 2001

• Updated the WIND Documentation Home Page, the User's Guide, and the Installation Guide for WIND 4.0. Documentation for WIND 3.0 still exists, but is no longer being maintained.
• Removed the beta documentation.
• Made current alpha documentation identical to the just-released WIND 4.0 documentation.
• Added a list summarizing the changes made from WIND Version 3.0 to 4.0.
• Removed the old NASTD documentation.

29 Mar 2001

• Rewrote the HISTORY keyword description in the User's Guide, defining the variables that may be tracked, adding information about how they're nondimensionalized (or not) when written into the .lis and .cth files, and including some examples.

16 Mar 2001

• Added a note to the documentation of the cfbeta utility about use of cfbeta when the original grid contains bleed regions.

21 Feb 2001

• Modified the COUPLING keyword description in the User's Guide, noting that high-order Roe zone coupling is now available for additional explicit operators.

14 Feb 2001

• Modified the CROSSFLOW keyword description in the User's Guide, noting that the default is 2.0 for three-dimensional flow, and 1.0 for two-dimensional and axisymmetric flow.

1 Feb 2001

• Added the CGNSBASE keyword in the User's Guide, allowing the use of CGNS format for the grid and flow files. Modified parts of several other sections, in particular the Files section, to reflect this additional capability.

31 Jan 2001

• Added a page with the monthly access statictics for the documentation and validation web sites.

18 Dec 2000

• Modified the COUPLING MODE keyword description to note that higher-order Roe coupling is now the default.
• Modified the description of TEST option 61, since the default is now to only apply boundary conditions that are consistent with the IBLANK values.
• Modified the description of the ROTATE keyword, which now allows different rotation rates in different zones, and added the REL-ROT-ZONE keyword, which allows coupling of adjacent zones with different rotation rates.

15 Dec 2000

• Added a bit to the descriptions of the CONVERGE and NEWTON keywords in the WIND User's Guide to clarify the convergence criteria used with Newton iteration.

8 Dec 2000

• Added the OMIT keyword to the CHEMISTRY keyword block in the WIND User's Guide. In a finite-rate chemistry solution, this keyword may be used to eliminate reactions involving specified species in selected zones.

4 Dec 2000

• Added the LESB keyword in the WIND User's Guide, which may be used with the SST model to specify use of a combined SST and Large Eddy Simulation (LES) turbulence model.

27 Nov 2000

• Modified the documentation of cfcombine in the WIND Utilities Guide to note that the NOLAP and HALFCELL keywords may only be used with .cfl files.

14 Nov 2000

• Modified the description of the TURBULENCE keyword in the WIND User's Guide. The Spalart Detached Eddy Simulation (DES) model is now invoked using a separate DES keyword, and the coefficient C_des may be user-specified.

8 Nov 2000

• Added the PAYNTER and SAJBEN keyword parameters to the COMPRESSOR FACE keyword description in the WIND User's Guide.
• Added the OUTFLOW NON-REFLECTING keyword to the WIND User's Guide.

26 Oct 2000

• Added a note to the COUPLING keyword description in the WIND User's Guide, that the COUPLING MODE ROE HIGH option is only available for the default explicit operator.

18 Oct 2000

• Added the DES parameter to the TURBULENCE keyword in the WIND User's Guide, allowing use of the Spalart Detached Eddy Simulation (DES) model for unsteady three-dimensional flows.

10 Oct 2000

• Modified the WALL FUNCTION keyword description in the WIND User's Guide, to expand the usage guidelines a bit, and to remove the notes about it not being applicable to internal boundaries or multi-species flows.

5 Oct 2000

• Added the FRINGE keyword in the WIND User's Guide, to freeze the solution at fringe points during a cycle. This is required when using WIND's new double-fringe overlapping boundary capability.

25 Sept 2000

• Modified the WIND Installation Guide, mostly to reflect changes in the makefiles used to build the WIND code, and the new availability of the tools source code.

20 Sept 2000

• Added TEST option 46, which sets μ_turb = 10 μ_lam along the wall in blowing regions, and in bleed regions with a specified negative bleed flow rate, when the SST turbulence model is used.
• Added TEST option 176, which allows the user to specify that the flow direction for ARBITRARY INFLOW is normal to the boundary face, or in the ξ (i.e., the i index) direction.

5 Sept 2000

• Modified the CYCLES and ITERATIONS keywords in the WIND User's Guide, adding PRINT FREQ options. These allow the user to specify how often cycle time information and residuals are written to the .lis file.
• Modified the REINITIALIZE keyword, adding the MODE AUTO option, to automatically reinitialize zones that aren't the same size in the .cgd and .cfl files.
• Added TEST option 10, allowing time step information to be written into the .lis file every mode cycles.
• Added TEST option 92, allowing operator splitting of the reacting chemistry source terms.
• Added TEST option 125, allowing time history information to be written into the .lis file instead of a .cth file.
• Updated the description of the windver script, noting that it now lists version numbers for the CFD_wind, ADF, and PVM libraries, in addition to the WIND code itself.

7 July 2000

• Modified slightly the description of the TURBULENCE keyword in the WIND User's Guide, clarifying the need to specify a "default" turbulence model.

26 May 2000

• Added the NAVIER-STOKES ITERATIONS keyword to the WIND User's Guide, allowing the specification of the number of sub-iterations for the Navier-Stokes equation group for each "iteration per cycle". This allows the turbulence model equations to be solved without simultaneously solving the Navier-Stokes equations. See the TURBULENCE keyword for additional details and an example.

19 Apr 2000

• Made some minor changes in the Definitions for CFD Applications section of the Common File User's Guide, involving data and variable names for unstructured grids.

12 Apr 2000

• Updated the CFPOST User's Guide. The principal changes are
  • the new blgrid command
  • the new analyze synthesis command
  • the new rel_humidity function with the calculate command
  • the new multiple segments and merge_segments options in the genplot command
  • the new gridunits option in the interpolate command

20 Mar 2000

• Modified the descriptions of the -mpmode and -usessh options in the wind script, noting that they require an executable containing links to the MPI libraries, and to an "ssh version" of PVM.

17 Mar 2000

• Updated the Test Options section in the WIND User's Guide, clarifying and correcting several entries.
• Updated the Common File User's Guide, adding descriptions of the new routines CFNMOV and CFNREN, and adding a few common file variables in the Definitions for CFD Applications section.

3 Mar 2000

• In the WIND Installation Guide, added a few additional things to check in the makefiles, plus a note to make sure that the location of cpp is in your search path, when installing the build distribution.
• Added notes in the Parallel Processing section of the WIND User's Guide about the use of ssh (secure shell) commands.

17 Feb 2000

• Made current alpha documentation identical to the just-released WIND 3.0 documentation.
• Added a list summarizing the changes made from WIND Version 2.0 to 3.0
• Replaced the PostScript versions of all the manuals (except the WIND Developer's Reference) with PDF versions.

15 Feb 2000

• Modified the descriptions of the cfcombine and cfsplit utilities in the WIND Utilities Guide, adding the NOLAP option to cfcombine and the HALFCELL option to both.
• Modified the description of the wind_post script in the WIND User's Guide to clarify the use of the job iteration number.
• Removed notes from the GRAVITY and ROTATE keyword descriptions in the WIND User's Guide, about CFPOST not recognizing the gravitational and rotational potential energy, since that's no longer true.

10 Feb 2000

• Added a paragraph to the description of the variable command in the CFPOST User's Guide listing the variable names for properties in a rotating reference frame.

7 Feb 2000

• Modified the ACCELERATE keyword description in the WIND User's Guide, clarifying its usage and adding the now-required ZONE parameter.
• Added a bit to the ARBITRARY INFLOW keyword description in the WIND User's Guide, trying to clarify the use of HOLD_TOTALS and HOLD_CHARACTERISTICS.
• Added the new CROSSFLOW keyword to the WIND User's Guide, for specification of the cross-flow CFL factor, replacing TEST option 106.
• Added the new WALL SLIP keyword to the WIND User's Guide, for specification of the number of iterations until no-slip conditions are reached, replacing TEST option 107.
• Added TEST option 61 to only apply boundary conditions that are consistent with the IBLANK values.

3 Feb 2000

• Added a paragraph to the BOUNDARY TVD keyword description in the WIND User's Guide, noting that the boundary TVD limiter must be more limiting than the interior TVD limiter.

14 Jan 2000

• Re-created the PostScript versions of all the documentation using the most recent version of LaTeX, making the files about 10% smaller.

22 Dec 1999

• Added a description of the ROTATESOLID option to the ARBITRARY INFLOW keyword, for holding total conditions constant in the inertial frame when computing in a rotating reference frame.

29 Nov 1999

• In the PostScript version of the WIND User's Guide, corrected an error in the description of the SUBSET parameter in the LOADS keyword. (In the HTML version, this correction was made back in May 1998. Apparently, no one uses the PostScript version.)

23 Nov 1999

• Modified the ACTUATOR | SCREEN keyword in the WIND User's Guide, adding DPS and DPT to the POWER option.
• Modified the HOLD_TOTALS option in the ARBITRARY INFLOW keyword,
• Added the MACCORMACK option to the IMPLICIT keyword, for specification of MacCormack's modified approximate factorization algorithm.
• Made IMPLICIT BOUNDARY a separate keyword.
• Created downloadable files containing the HTML form of the WIND documentation, for installation on a local system. See the home pages for the individual manuals for instructions.

17 Nov 1999

• Added the new TTSPEC keyword to the WIND User's Guide, and removed the TEMPERATURE and TRANSITION keywords.
• Updated the description of the tmptrn utility in the WIND Utilities Guide.

10 Nov 1999

• In the WIND User's Guide, split the "Scripts and Parallel Processing" section in two - a Scripts section and a Parallel Processing section.
• Expanded the description of the wind_post script, and added descriptions of the windmp and windver scripts.

8 Nov 1999

• Added the optional HIGH parameter to the COUPLING MODE ROE keyword description in the WIND User's Guide, which turns on higher-order coupling at zone boundaries.

3 Nov 1999

• Modified the ARBITRARY INFLOW and BLEED keyword descriptions in the WIND User's Guide to describe the new generalized solid-body rotation capability, and the new time-varying bleed capability.

2 Nov 1999

• Added a note to the TEMPERATURE and TRANSITION keyword descriptions in the WIND User's Guide, about assuming a .dat extension on the file name if none is specified.

25 Oct 1999

• Updated the description of the wind script in the WIND User's Guide, adding the -mpmode, -not_nice, -nzones, and -usessh options, and rewording several other options.

21 Oct 1999

• Added the F2FIX parameter to the TURBULENCE keyword in the WIND User's Guide, allowing specification of the maximum distance from the wall within which the F₂ term may be non-zero.

24 Sept 1999

• Removed the POWER DP option (for specification of the static pressure increment) from the ACTUATOR | SCREEN keyword description in the WIND User's Guide, since this option is not yet available.

20 Sept 1999

• Changed the name of the GMAN command INDEX to REMAP, and changed its description a little.

17 Sept 1999

• Added descriptions of the syntax for the range parameter in the GMAN User's Guide for the SUBAREA, SUBREGION, and Boundary condition commands.

17 Aug 1999

• Expanded description of periodic boundaries, and how to set them using GMAN.

16 Aug 1999

• In the WIND Utilities Guide, added documentation for the tmptrn utility, and deleted the trans utility (used with WIND 1.0).
• Fixed error in the description of the ROLL keyword.

13 Aug 1999

• Updated the descriptions of the TEMPERATURE and TRANSITION keywords for consistency with WIND 2.0.

11 Aug 1999

• Added documentation for the adfedit and cfreset_iter utilities in the WIND Utilities Guide.

9 Aug 1999

• Clarified usage of the SOLIDBODY|VORTEX option with the ARBITRARY INFLOW keyword.
• Added a bit to the question about getting PVM to compile and run properly in the porting section of the WIND Installation Guide.

12 July 1999

• Fixed a syntax error in the description of the BLOW keyword.

8 July 1999

• Added documentation for the cfview utility in the WIND Utilities Guide.
• Removed mention of the "mixed axis wall", "trailing edge", and "discontinuous" boundary conditions in the Grid Topology Boundary Conditions section of the WIND User's Guide, since they apparently aren't used in the code.
• Modified the list of boundary types in the definition of IPAR(20) in the "Zone Node Header Common Definitions" subsection of the Node Header Definitions section of the Common File User's Guide, for consistency with current terminology in WIND and GMAN.

3 June 1999

• Added a couple of questions/answers to the Frequently (or not) Encountered Problems list in the "Porting WIND to a New UNIX Platform" section of the WIND Installation Guide, dealing with a fix for the failures in common I/O library calls on SGI R12000 systems involving the ADF library, and a message about an undefined function "tempnam" when compiling the Common File library.

27 May 1999

• Modified the WIND Installation Guide to add more detail about information available from the IVMS Projects Page, including comparing version numbers and dates for the WIND source code and executables.

17 May 1999

• Added a couple of questions/answers to the Frequently (or not) Encountered Problems list in the "Porting WIND to a New UNIX Platform" section of the WIND Installation Guide, dealing with file permission problems and failures in common I/O library calls involving the ADF library.

11 May 1999

• Added parameters to the TURBULENCE keyword for specification of a correction for system rotation and streamline curvature that may be used with the Spalart-Allmaras model.

27 Apr 1999

• Added section on Porting WIND to a New UNIX Platform to the WIND Installation Guide.

12 Apr 1999

• Added list summarizing the changes made from WIND Version 1.0 to 2.0
• Modified list of boundary condition names in the GMAN User's Guide.
  • "Inflow/outflow" was changed to "freestream"
  • "Confined outflow" was changed to "outflow"
  • "Freestream outflow" and "diffuser inflow" were eliminated

1 Apr 1999

• Added download and installation instructions for the PC version of the application distribution to the WIND Installation Guide.

26 Mar 1999

• Replaced the WIND 1.0 documentation with WIND 2.0 (formerly beta) documentation. The WIND 1.0 documentation is still available, but is no longer being maintained.
• Activated links to the WIND Developer's Reference, available to registered WIND developers only.

16 Mar 1999

• Changed the area code in the NPARC Support phone number from 615 to 931.

10 Mar 1999

• Changed references to "NASA Lewis" and "lerc.nasa.gov" to "NASA Glenn" and "grc.nasa.gov", due to center name change effective 1 Mar 1999.

9 Mar 1999

• Fixed error in description of comment characters in the WIND User's Guide. / is the only supported comment character. # and/or ! may work in some situations, but not always.

2 Mar 1999

• Fixed error in description of K-E COMPRESSIBILITY keyword, used with the Chien k-ε turbulence model, in the WIND User's Guide. The default is SARKAR, not OFF.

19 Feb 1999

• Fixed syntax error in descriptions of BLOW and CHEMISTRY keywords in the WIND User's Guide. Species mass fractions must be separated by spaces, not commas. Also, CHEMISTRY keyword block should end with ENDCHEMISTRY, not END.

16 Feb 1999

• Removed quinf from the list of Variable Normalization Factors in the CFPOST User's Guide.

10 Feb 1999

• Added documentation for the cfbeta utility in the WIND Utilities Guide.

9 Feb 1999

• Rewrote description of CFL# keyword in the WIND User's Guide.

8 Feb 1999

• Added PostScript (via LaTeX) version of the WIND Utilities Guide

5 Feb 1999

• Added documentation for the jormak utility in the WIND Utilities Guide.

4 Feb 1999

• Added a WIND Utilities Guide.

27 Jan 1999

• Updated Tutorial section in WIND User's Guide for consistency with WIND 2.0.16 beta.

11 Jan 1999

• Various changes in the WIND User's Guide for consistency with WIND 2.0.5 beta, including:
  • Modified section on Boundary Condition Types to reflect changed names in GMAN
  • Modified discussion of HISTORY keyword to note that it only applies to unsteady flow problems, where the time step is being specified in seconds and is the same throughout the flow field
• Modified description of variable command and list of Equations Used by CFPOST in the CFPOST User's Guide, to try to clarify which variables require a surface specification and how to do it.

8 Jan 1999

• Updated Test Options section in WIND User's Guide for consistency with WIND 2.0.5 beta.

5 Jan 1999

• Updated Tutorial section in WIND User's Guide for consistency with WIND 2.0.5 beta.

13 Nov 1998

• Added HOLD_TOTALS keyword to the ARBITRARY INFLOW keyword block.
• Added INCLUDE keyword description.
• Added a bit about using the IJK_RANGE keyword in the ARBITRARY INFLOW keyword block for boundary layer initialization.

29 Oct 1998

• Added IJK_RANGE option back to the REINITIALIZE keyword

21 Oct 1998

• Fixed error in syntax for EFFICIENCY option in ACTUATOR | SCREEN keyword (an "or" sign was missing between VORTEX val and SCREEN).

16 Oct 1998

• Added a section to the WIND Installation Guide about accessing WIND at NASA Glenn. This section is viewable from the grc.nasa.gov domain only.

15 Oct 1998

• Fixed error in description of UNIFORM option in ARBITRARY INFLOW keyword (species mass fractions were left out).

9 Oct 1998

• Added menus at the top of each WWW page for easier selection of other sections and documents.

28 Sept 1998

• Corrected the Tutorial and Numerical Modeling sections of the WIND User's Guide, to say that the default explicit operator is the Roe second-order upwind scheme, modified for stretched grids.

4 Sept 1998

• Added GMAN usage steps to the "Tutorial" section in the WIND User's Guide.

3 Sept 1998

• Modified the ARBITRARY INFLOW description to include parameters allowing the specification of inflow turbulence levels when the SST turbulence model is used.
• Modified the TURBULENCE description to add additional options available with the FREE_K and FREE_OM keywords.

31 Aug 1998

• Added info about previously undocumented features in the multi-processing control (.mpc) file - the io directive, and additional parameters for the host directive.

19 Aug 1998

• In keyword syntax descriptions, added a "\" at the end of lines being continued to the next line for display purposes.

18 Aug 1998

• Fixed error in example of USERCHEM option in ARBITRARY INFLOW keyword.
• Added notes about the requirement that the GAS and CHEMISTRY keywords, if used, must come before the ARBITRARY INFLOW keyword.
• Added WALL FUNCTION keyword, allowing the use of wall function boundary conditions.

24 July 1998

• Modified syntax for specification of zone and boundary for the ACTUATOR | SCREEN keyword, allowing discontinuous change in properties across a part of a zone boundary.

22 July 1998

• Added GAUSS option to IMPLICIT keyword for Gaussian implicit operator
• Added VAN LEER option to RHS keyword for Van Leer upwind explicit operator; eliminated TEST 195
• Added DQ LIMITER keyword for ΔQ limiter

17 June 1998

• Added additional notes in the Tutorial and the Convergence Monitoring sections of the WIND User's Guide about the history tracking capability not working in parallel mode.
• Added link to Problem Tracking table maintained at AEDC.

9 June 1998

• Fixed error in description of the SEQUENCE keyword. Number of grid points must be 2ⁿ m + 1, not (2n)m + 1.

29 May 1998

• Split Keyword Summary section of WIND User's Guide into separate files for faster downloading when individual keywords are referenced.

28 May 1998

• Fixed error in description of the #LOADLIMIT command in the .mpc file.

26 May 1998

• Added information about the Chien k-ε turbulence model, mostly to the TURBULENCE keyword.

19 May 1998

• Added GRAVITY and ROTATE keywords.
• Added SPECIFY ANGLE option under TURNING for ACTUATOR | SCREEN keyword.
• Added options to BOUNDARY TVD keyword to allow specification of the TVD flux limiter in the explicit operator at specified coupled boundaries.

15 May 1998

• Corrected error in description of SUBSET parameter in LOADS keyword.

4 May 1998

• Removed the developer-level documentation, since it has been determined to be export-controlled. Procedures for allowing WIND users to access these documents are being investigated.

27 Apr 1998

• Added NEWTON keyword for Global Newton algorithm.
• Modified DOWNSTREAM PRESSURE keyword, adding unsteady capability.

17 Apr 1998

• In the WIND User's Guide, clarified (some might say corrected) the discussion of where the NDSTOP file must be located. Also modified the tutorial and the wind script man page to clarify the location of the remote run directory.

13 Apr 1998

• Modified the description of the inflow/outflow and confined outflow boundary conditions in the WIND User's Guide. The confined outflow boundary condition should be set in GMAN for downstream outflow boundaries in external flow problems, especially if a shear layer is exiting the computational domain, and not the inflow/outflow boundary condition.

8 Apr 1998

• Fixed error in the definition of the CLOSS parameter for the ACTUATOR | SCREEN keyword.

7 Apr 1998

• Added some additional detail about the use of the ARBITRARY INFLOW keyword in flowfield initialization.
• Clarified the definition of the FROZEN option to the IJK_RANGE parameter of the ARBITRARY INFLOW keyword.
• Fixed a couple of syntax errors and typos in the description of the HISTORY keyword, and expanded the description a bit.

26 Mar 1998

• Added a GMAN demo case for a 2-D airfoil with a flap, showing how to cut holes, define fringes, and set boundary conditions for overlapping (Chimera) grids.

17 Mar 1998

• Changed the name of the WIND Programmer's Reference to WIND Developer's Reference, and updated the call trees and lists of parameters, common variables, and subprograms to be consistent with WIND 1.0.

5 Mar 1998

• Added a Downloading Files section to the Tutorial, allowing easy access to the input and output files for the tutorial test case.

27 Feb 1998

• Made changes to the Common File Programmer's Guide received from Boeing, mostly related to a C interface to the routines that is now available. It also includes two new routines - CFVSIZ and CFHOST.
• Made several changes to the CFPOST User's Guide received from Boeing, including new commands bledge, calculate, delta, smooth, set width, and visual3.
• In the CFPOST User's Guide, added links between the variable names and their definitions.
• Updated the Tutorial section of the WIND User's Guide to be consistent with WIND 1.0.

25 Feb 1998

• Updated list of supported platforms in the WIND Installation Guide, and removed detailed list from Introduction in WIND User's Guide.
• Added keywords used with TURBULENCE keyword to specify freestream values of k and omega with the SST turbulence model.

13 Feb 1998

• Added note explaining that the SCREEN boundary condition is not intended for use with choked screens.

12 Feb 1998

• Added "WIND: The Production Flow Solver of the NPARC Alliance", presented as AIAA Paper 98-0935 at the 36th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV, Jan 12-15, 1998.

11 Feb 1998

• Added a WIND Installation Guide, currently a brief and preliminary guide to installing the WIND code and its associated pre- and post-processing tools.

9 Feb 1998

• Added short description of wind_post script to WIND User's Guide

6 Feb 1998

• Added description of wind script to WIND User's Guide

4 Feb 1998

• Moved description of chemistry files from WIND Programmer's Reference to WIND User's Guide
• Added PostScript (via LaTeX) and HTML versions of the Common File Programmer's Guide

18 Dec 1997

• Re-organized WIND Documentation Home Page, adding separate home pages for the WIND User's Guide, etc.
• Added PostScript (via LaTeX) and HTML versions of the GMAN User's Guide

1 Dec 1997

• Added Tutorial section to WIND User's Guide

14 Nov 1997

• Added info about Global Newton (.cfk) file
• Added JACOBI option to IMPLICIT keyword
• Added TEST options 8 and 124, plus entries for several TEST options reserved for proprietary features at Boeing

7 Nov 1997

• Fixed error in syntax of HISTORY keyword.

29 Oct 1997

• Added notes to boundary conditions planned for WIND 1.0 that are not in the initial beta version released on 23 Oct 1997.
• Added PostScript (via LaTeX) and HTML versions of the CFPOST User's Guide

15 Oct 1997

• Added remaining sections from NASTD Technical Development Manual to the WIND Programmer's Reference
• Split PostScript form of WIND Programmer's Reference into two files, (one with Subprogram Details, and one with everything else), instead of one file per section
• Reversed order of dates in this list

7 Oct 1997

• Added links to John Slater's "Guide for Translating Between NPARC and WIND Boundary Conditions"
• Re-organized WIND Documentation home page

6 Oct 1997

• Added John Slater's re-write of the "Boundary Conditions" section to the WIND User's Guide
• Added description of the COMPRESSOR FACE keyword

3 Oct 1997

• Removed IJK_RANGE option from REINITIALIZE keyword
• Added DOWNSTREAM MACH keyword and DOWNSTREAM PRESSURE value VARIABLE option

23 Sept 1997

• Split "Subprogram Details" section of WIND Programmer's Reference into separate files for faster downloading when individual routines are referenced

22 Sept 1997

• Minor changes and corrections to the WIND User's Guide
• Minor changes and corrections to the "Files" section of the WIND Programmer's Reference

16 Sept 1997

• Added HTML version of WIND User's Guide
• Added description of chemistry files to WIND Programmer's Reference
• Added links to documents describing NPARC Alliance programming, documentation, and testing guidelines

19 Aug 1997

• First release