Influence of compressibility modification to k-ε turbulence models for supersonic base flow

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An improvement to the k-ε turbulence model is presented and is shown to lead to better agreement with data regarding supersonic base flows. The improvement was achieved by imposing a grid-independent realizability constraint in the Launder-Sharma k-ε model. The effects of compressibility were also examined. The numerical results show that the modified Launder-Sharma model leads to some improvement in the prediction of the velocity and turbulent kinetic energy profiles. Compressibility corrections also lead to better agreement in both the turbulent kinetic energy and the Reynolds stress profiles with the experimental data. © The Korean Society for Aeronautical & Space Sciences.
Publisher
The Korean Society for Aeronautical & Space Sciences
Issue Date
2012
Language
English
Citation

International Journal of Aeronautical and Space Sciences, v.13, no.2, pp.188 - 198

ISSN
2093-274X
DOI
10.5139/IJASS.2012.13.2.188
URI
http://hdl.handle.net/10203/174683
Appears in Collection
AE-Journal Papers(저널논문)
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