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Toward Verification of USM3D Extensions for Mixed Element GridsThe unstructured tetrahedral grid cell-centered finite volume flow solver USM3D has been recently extended to handle mixed element grids composed of hexahedral, prismatic, pyramidal, and tetrahedral cells. Presently, two turbulence models, namely, baseline Spalart-Allmaras (SA) and Menter Shear Stress Transport (SST), support mixed element grids. This paper provides an overview of the various numerical discretization options available in the newly enhanced USM3D. Using the SA model, the flow solver extensions are verified on three two-dimensional test cases available on the Turbulence Modeling Resource website at the NASA Langley Research Center. The test cases are zero pressure gradient flat plate, planar shear, and bump-inchannel. The effect of cell topologies on the flow solution is also investigated using the planar shear case. Finally, the assessment of various cell and face gradient options is performed on the zero pressure gradient flat plate case.
Document ID
20140000342
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Pandya, Mohagna J. (NASA Langley Research Center Hampton, VA, United States)
Frink, Neal T. (NASA Langley Research Center Hampton, VA, United States)
Ding, Ejiang (Analytical Services and Materials, Inc. Hampton, VA, United States)
Parlette, Edward B. (Vigyan Research Associates, Inc. Hampton, VA, United States)
Date Acquired
January 22, 2014
Publication Date
June 24, 2013
Subject Category
Aerodynamics
Report/Patent Number
NF1676L-15586
Meeting Information
Meeting: AIAA Applied Aerodynamics Conference
Location: San Diego, CA
Country: United States
Start Date: June 24, 2013
End Date: June 27, 2013
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 284848.02.05.07.01
Distribution Limits
Public
Copyright
Public Use Permitted.

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