GMAN supports several formats for the grid file, described in the following list.
|Common File||Common files use a flexible binary direct access
This allows grid data for multizone structured grids and their
associated boundary condition data to be stored in the same file.
It also supports overlapping grids and unstructured grids.
Common Grid files, which use the .cgd extension,
along with Common Flow files (extension .cfl),
are used directly by the Wind-US Navier-Stokes
flow solver, and by the common file post-processing utility
Many other tools are also built around the common file format.
See the Common File User's Guide
for details about the structure of common files.
|MDA/ZDA||Mesh Direct Access (MDA) files are binary files
associated with earlier versions of NASTD, containing the
coordinate information for each zone of the grid.
These files were typically generated using the McDonnell Douglas
zonal batch grid generator ZGRID.
A Zone coupling Direct Access (ZDA) file is associated
with the MDA file to provide boundary condition and
zone interface coupling data.
|ZDF||A Zone Definition File (ZDF) is a common file that
contains only the boundary grid information for each zone.
This makes for a smaller file for transporting between machines
and also makes access quicker.
A Zone Definition File (ZDF) is a formatted ascii file
from the McDonnell Douglas surface grid generator ZONI3G.
|PDA||Plot Direct Access (PDA) files are binary files containing
the computational grid and some commonly plotted flow variables.
|FANSI FDA||A FANSI Direct Access (FANSI FDA) file is a binary
direct access file containing the grid and conservation
variables for a case run with the FANSI two-dimensional
Last updated 16 Mar 1999