| 摘要: |
| 基于湍流不平衡性的分析,通过修正雷诺应力以及模型系数的计算,提高了S-A模型在二维边界层以及三维叶栅的分离流动上的预估能力。修正后的S-A模型给出了与实验吻合较好的结果,在对于分离流动的预估能力上优于原始模型。 |
| 关键词: 湍流模型 分离 边界层 角区 各向异性 |
| DOI： |
| 分类号:V231.3 |
| 基金项目: |
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| Modification of S-A turbulence model on separation flows |
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WANG Dan-hua, MA Wei, LU Li-peng
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National Key Laboratory of Aircraft Engine,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China
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| Abstract: |
| Based on the analysis of the nonequilibrium of turbulence,by the modification of Reynolds stresses and model coefficient,S-A turbulence model was improved on the ability to predict separation flows of 2-D boundary layer and 3-D cascade.The results by modified S-A turbulence model are consistent with experiment,indicating better simulation for separation flows superior to the original model. |
| Key words: Turbulence model Separation Boundary layer Corner region Anisotropic |
