Comparison of four turbulence models in diffusing S-duct

Li Fen Zhang, Zhen Xia Liu, Ya Guo Lu

科研成果: 期刊稿件文章同行评审

5 引用 (Scopus)

摘要

Four turbulence models: Realizable k-ε, S-A (Spalart-Allmaras), SST (Shear stress transport) and RSM (Reynolds stress equation model), were compared by simulating separated flow in a diffusing S-duct. The numerical results show the capability of each turbulence model in dealing with separation. Before separation, the predicted results agree well with experiment for four models, but in separated region, the turbulence model has important effect in simulating separation. SST model is compared to RSM in simulating separation and pressure coefficient, however not as clearly as RSM. S-A model under predict the separation and the separated region is smaller than experiment. Mach number is higher than experimental data for four models. Pressure recoveries are similar for different models, and are within 0.7% agreement with experimental data.

源语言英语
页(从-至)1888-1891
页数4
期刊Hangkong Dongli Xuebao/Journal of Aerospace Power
23
10
出版状态已出版 - 10月 2008

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