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基于非Favre过滤的大涡模拟

李斌 吴颂平

李斌, 吴颂平. 基于非Favre过滤的大涡模拟[J]. 北京航空航天大学学报, 2007, 33(10): 1150-1153.
引用本文: 李斌, 吴颂平. 基于非Favre过滤的大涡模拟[J]. 北京航空航天大学学报, 2007, 33(10): 1150-1153.
Li Bin, Wu Songping. Large eddy simulation based on non-Favre filtering[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(10): 1150-1153. (in Chinese)
Citation: Li Bin, Wu Songping. Large eddy simulation based on non-Favre filtering[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(10): 1150-1153. (in Chinese)

基于非Favre过滤的大涡模拟

详细信息
  • 中图分类号: V 211.3

Large eddy simulation based on non-Favre filtering

  • 摘要: 将直接过滤的可压缩Navier-Stokes(NS)方程组作为可压缩湍流大涡模拟方程组.方程组中因过滤产生的高阶相关项用Taylor级数展开近似表达,得到可压缩张量扩散模型.与传统的采用质量加权过滤(Favre过滤)的可压缩大涡模拟方程组相比,由于这种方法没有密度信息的损失,所以能反映真实的密度脉动信息;方程所求量为流场物理量的过滤值,物理意义明确,使大涡模拟结果与直接数值模拟或实验结果更具有可比性.用这种大涡模拟方程组对绕双椭球高超声速湍流进行了模拟,并将所得结果与实验、Baldwin-Lomax(BL)模型及Smagorinsky亚格子模型的结果进行了对比.

     

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出版历程
  • 收稿日期:  2006-10-13
  • 刊出日期:  2007-10-31

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