Turbulence modeling for highly separated flows

D. Stephen Nichols, Kidambi Sreenivas, Steve L. Karman, Brent Mitchell

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Scopus citations

Abstract

The objective of this study is to investigate the Detached Eddy Simulation (DES) modifications to the hybrid k - ε, k - ω (kεkω) turbulence model and the Scale Adaptive Simulation (SAS) modifications to the one-equation k - ε (1kε) turbulence model. Additionally, modifications to the damping functions to the baseline 1kε model are presented and validated for a variety of test cases. Further, the Stress-ω (Sω) Reynolds stress model is tested alongside the 1kε and kεkω models. A blended dissipation equation is implemented into the Sω model and validated for a variety of test cases. A surface-mounted cube is chosen as the primary test case to examine specifically the highly separated wake flow. Multiple grid levels are used to identify the grid requirements necessary for accurate computations with the kεkω DES and 1kε SAS models.

Original languageEnglish
Title of host publicationCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages16587-16599
Number of pages13
ISBN (Print)1563478900, 9781563478901
DOIs
StatePublished - 2007
Externally publishedYes
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
Volume24

Conference

Conference45th AIAA Aerospace Sciences Meeting 2007
Country/TerritoryUnited States
CityReno, NV
Period01/8/0701/11/07

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