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CFD中文网

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  2. Algorithm
  3. RANS SA和SA-DES的区别对于FSI

RANS SA和SA-DES的区别对于FSI

Scheduled Pinned Locked Moved Algorithm
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  • S Offline
    S Offline
    S1m0n
    wrote on last edited by
    #1

    目前做了一个半潜平台的自由衰减,使用两种不同湍流模型结果大不相同,RANS SA求出来的一次阻尼大二次阻尼小,SA-DES相反,但是平均线性阻尼率却没什么变化,想请问各位大佬们两个湍流模型的差异,大概是什么原因导致的这个差异!
    左边的洋红色是RANS SA,右边的是SA-DES
    Inked0cc2a5b24c49b29cb3a54cb5aaab15d_LI.jpg

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  • S Offline
    S Offline
    S1m0n
    wrote on last edited by
    #2

    SA是Spalart-Allmaras,Reynolds-Averaged Navier-Stokes Spalart-Allmaras turbulence和Spalart-Allmaras Detached Eddy
    Spalart-Allmaras采用的是标准的SA,不是高雷诺数的。DES也是标准的DES模型

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