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李新亮, 傅德薰. 8阶群速度控制格式及其应用[J]. 力学学报, 2004, 36(1). DOI: 10.6052/0459-1879-2004-1-2003-072
引用本文: 李新亮, 傅德薰. 8阶群速度控制格式及其应用[J]. 力学学报, 2004, 36(1). DOI: 10.6052/0459-1879-2004-1-2003-072
OPTIMIZED GROUP VELOCITY CONTROL SCHEME[J]. Chinese Journal of Theoretical and Applied Mechanics, 2004, 36(1). DOI: 10.6052/0459-1879-2004-1-2003-072
Citation: OPTIMIZED GROUP VELOCITY CONTROL SCHEME[J]. Chinese Journal of Theoretical and Applied Mechanics, 2004, 36(1). DOI: 10.6052/0459-1879-2004-1-2003-072

8阶群速度控制格式及其应用

OPTIMIZED GROUP VELOCITY CONTROL SCHEME

  • 摘要: 构造了8阶精度的群速度控制型差分格式. 根据激波捕捉能力及对小尺度分辨能力对格式系数进行了优化. 采用该格式对可压缩均匀各向同性湍流进行了直接数值模拟,所计算的最大湍流马赫数达到0.95. 相同计算条件下的结果与他人结果吻合较好,说明了格式在捕捉激波的同时对湍流小尺度有较好的分辨能力.

     

    Abstract: A new difference scheme called GVC8 is developed, and thescheme are used in the direct numerical simulation of decaying compressibleturbulence. In the DNS we have successfully improved the turbulent Machnumber up to 0.95. The statistical quantities thus obtained at lowerturbulent Mach number agree well with those from previous authors start withsame initial conditions, but they are limited to simulate at lower turbulentMach numbers due to so-called start-up problem. Energy spectrum ofcompressible turbulent flow is analyzed.

     

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