Investigation on improving the capability of predicting separation of Spalart-Allmaras turbulence model
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Investigation on improving the capability of predicting separation of Spalart-Allmaras turbulence model
Vol. 23, Issue 8, (2008)
作者机构:
北京航空航天大学 能源与动力工程学院,北京,100191
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Published:2008
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MA Wei, WANG Dan-hua, LU Li-peng. Investigation on improving the capability of predicting separation of Spalart-Allmaras turbulence model[J]. 2008, 23(8).
DOI:
MA Wei, WANG Dan-hua, LU Li-peng. Investigation on improving the capability of predicting separation of Spalart-Allmaras turbulence model[J]. 2008, 23(8).DOI:
Investigation on improving the capability of predicting separation of Spalart-Allmaras turbulence model
Two methods were applied to improve the capability of predicting separation of Spalart-Allmaras turbulence model.One was to improve the capability of predicting Reynolds normal stress based on the property of Spalart-Allmaras turbulence model
the other one was to calibrate the production coefficient based on the non-equilibrium of turbulence in separation region.The results show that: the first one contributes little to improving the capability of prediction separation of Spalart-Allmaras turbulence model
because the capability of predicting Reynolds normal stresses is not improved considerably;while the second one improves obviously the capability of prediction separation of Spalart-Allmaras turbulence model
because the capability of S-Amodel in capturing the non-equilibrium turbulence is improved notably.