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Shirani, E.; Ahmadikia, H.; Talebi, S., E-mail: eshirani@cc.iut.ac.ir
Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)2001
Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)2001
AbstractAbstract
[en] The aim of this paper is to evaluate five different turbulence models when used in rather complicated two-dimensional and axisymmetric supersonic flows. They are Baldwin-Lomax, k-l, k-ε, k-ω and k-ζ turbulence models. The compressibility effects, axisymmetric correction terms and some modifications for transition region are used and tested in the models. Two computer codes based on the control volume approach and two flux-splitting methods. Roe and Van Leer, are developed. The codes are used to simulate supersonic mixing layers, flow behind axisymmetric body, under expanded jet, and flow over hollow cylinder flare. The results are compared with experimental data and behavior of the turbulence models is examined. It is shown that both k-l and k-ζ models produce very good results. It is also shown that the compressibility correction in the model is required to obtain more accurate results. (author)
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May 2001; 19 p; Also available at: http://www.ictp.trieste.it; 48 refs, 15 figs, 2 tabs
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