简化流通量分裂算法研究

A STUDY OF SIMPLIFIED FLUX-VECTOR SPLITTING ALGORITHM

  • 摘要: 针对Steger-Warming流通矢量分裂格式和其修正格式所构成的混合格式进行了研究,引入压差放大因子,使其对于有粘激波流场分辨能力有所提高,同时采用一种特殊分裂方法以简化矩阵运算。利用该方法研究了三种超声速流场:(1)平面激波反射问题;(2)超声速边界层流动;(3)高超声速压缩拐角流动。

     

    Abstract: A hybird scheme is constructed by Steger-Warming Splitting and its modified algorithm.The enlargment factor of pressure difference is used to prompt ability of flow field resolution.Meanwhile,a special matrix splitting method is adopted and makes matrices very easy to compute.Three examples of two-dimensional fluid flows containing shocks and/or boundary layer demonstrate the efficiency and accuracy of this new scheme.

     

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