MSU TURBO

MSU TURBO is a graphical user interface for a set of codes called GUMBO and TURBO used for analysis of unsteady flows in turbomachinery. MSU TURBO is used to define input parameters, and includes online documentation. The codes are being developed at the Computational Simulation and Design Center at the Engineering Research Center at Mississippi State University (MSU). Development of the codes has been supported by NASA Glenn Research Center, the US Army Research Office, GE Aircraft Engines, and Honeywell Engines Systems and Service.

MSU TURBO home page: http://www.erc.msstate.edu/simcenter/docs/msu_turbo/

For more information about MSU TURBO, contact Dr. Michael D. Hathaway,
Michael.D.Hathaway@grc.nasa.gov

GUMBO

GUMBO (Graphical Unstructured MultiBlock Omnitool), is a graphical preprocessor for defining grid and boundary condition information needed by TURBO. GUMBOis used to define grid block
connectivity information, adjust the block sizes for parallel execution, and set boundary
conditions at the block boundaries and interfaces.

Features of GUMBO

• Built-in help, online documentation and tutorial
• Data input and output
• Read / Write boundary condition information
• Read / Write grid block connectivity information
• Graphical boundary condition specification and diagnostics
• Graphical specification of boundary conditions from menu of boundary conditions
• Diagnostic detection of regions with unspecified or overlapping boundary conditions
• Automatic/Manual grid block connectivity
• Grid repartitioning for parallel execution
• Grid manipulation including smoothing, rescaling, translation, rotation, resizing and reordering

TURBO

TURBO is a scalable, parallel multiblock flow solver for unsteady flows in turbomachinery. It solves the unsteady Reynolds-averaged Navier-Stokes equations with a decoupled k - epsilon
turbulence model. The code is being developed by Dr. Jenping Chen at Mississippi State University.

TURBO is parallelized with the use of MPI for data communication over multiple processors. The parallel code supports arbitrary grid blocking which is useful in modeling complex geometries.

Features of TURBO

• Finite-volume discretization
• High-order fluxes using Roe's scheme
• Real & perfect gas models
• Implicit time marching using Newton & Gauss-Seidel relaxation
• Structured multiblock grids with arbitrary block connectivity
• Full annulus calculations (exact blade count)
• Partial annulus using phase lagged boundary conditions (single passage per blade row)
• Partial annulus using reduced blade counts
• Has been run on SGI, HP, CRAY, and Linux cluster computers

Applications of TURBO

• Axial and centrifugal compressors and turbines
• Unsteady blade row interaction
• Wake-blade interaction (unsteady inlet/exit boundary conditions)
• Flutter simulations
• Rotating stall simulations

Examples
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