Grid sensitivity of detached eddy simulation of a mach 16 re-entry configuration

Krishnendu Sinha, Graham V. Candler

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents analysis of hypersonic base flows using the detached eddy simulation (DES) methodology. Unlike Reynolds-averaged Navier-Stokes (RANS) simulations, DES computes the dominant unsteady motion in the three-dimensional flow behind a vehicle, and thus results in a more realistic flow field than RANS. Simulations are performed on carefully designed DES grids and the effect of grid refinement in the focus region is studied. At the current conditions the flow in the near wake is transitional. Successive grid refinement in this case reduces the magnitude of the eddy viscosity such that the DES solution on the finest mesh approaches direct simulation without a turbulence model. In the absence of significant eddy viscosity, lowering of numerical dissipation is essential to achieve grid-converged solution.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages13458-13469
Number of pages12
ISBN (Print)1563478900, 9781563478901
DOIs
StatePublished - 2007
Event45th AIAA Aerospace Sciences Meeting 2007 - Reno, NV, United States
Duration: Jan 8 2007Jan 11 2007

Publication series

NameCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
Volume19

Other

Other45th AIAA Aerospace Sciences Meeting 2007
CountryUnited States
CityReno, NV
Period1/8/071/11/07

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