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Using Adaptive Mesh Refinement to Study Grid Resolution Effects for Shock-Boundary Layer InteractionsAdaptive Mesh Refinement (AMR) promises a much more computationally efficient means to obtain a discrete approximation to a continuous boundary value problem of a specified accuracy than classic isotropic grid refinement. The AMR capability of OVERFLOW (a computational fluid dynamics (CFD) code) is utilized to provide estimates of the exact analytical solutions to problems of interest to turbulence modeling. Predictions of surface pressure and skin friction, essentially the state of stress at the surface, shows little difference with grids believed to be "grid resolved." Velocity profiles, on the other hand, show marked differences in flows with shocks. The AMR method, as implemented in OVERFLOW 2.2k, appears to provide the ability to produce arbitrarily accurate solutions at a predictable cost much smaller than classic uniform mesh refinement.
Document ID
20180004281
Acquisition Source
Ames Research Center
Document Type
Conference Paper
Authors
Olsen, Michael E. (NASA Ames Research Center Moffett Field, CA, United States)
Lillard, Randolph P. (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 8, 2018
Publication Date
June 25, 2018
Subject Category
Fluid Mechanics And Thermodynamics
Report/Patent Number
ARC-E-DAA-TN56449
Meeting Information
Meeting: AIAA Aviation Forum
Location: Atlanta, GA
Country: United States
Start Date: June 25, 2018
End Date: June 29, 2018
Sponsors: American Inst. of Aeronautics and Astronautics
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Keywords
Turbulence Modeling
CFD
Adaptive Mesh Refinement

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