| S-A模型在分离流动模拟中的改进 |
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| 引用本文： | 王丹华,马威,陆利蓬.S-A模型在分离流动模拟中的改进[J].推进技术,2008,29(5):539-544. |
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| 作者姓名： | 王丹华 马威 陆利蓬 |
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| 作者单位： | 北京航空航天大学,航空发动机气动热力重点实验室,北京,100083 |
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| 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。
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| 关 键 词： | 湍流模型 分离 边界层 角区 各向异性 |
Modification of S-A turbulence model on separation flows |
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| WANG Dan-hu,MA Wei and LU Li-peng.Modification of S-A turbulence model on separation flows[J].Journal of Propulsion Technology,2008,29(5):539-544. |
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| Authors: | WANG Dan-hu MA Wei and LU Li-peng |
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| Institution: | (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. |
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| Keywords: | Turbulence model Separation Boundary layer Corner region Anisotropic |
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