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  3. OpenFOAM如何统计涡脱落频率?

OpenFOAM如何统计涡脱落频率?

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  • 莫 Offline
    莫 Offline
    莫晓柒
    wrote on last edited by
    #1

    想问一下大家OpenFOAM计算非定常时可以统计涡脱落频率吗?怎么统计呢?

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  • R Offline
    R Offline
    random_ran 大神
    wrote on last edited by
    #2

    求 St 的方法有很多,比如对阻力或者升力系数 fft,或者在wake区域对某个参考点速度检测,然后在垂直于来流方向做fft。需要注意的是对Cd做fft所得的St应该是对Cl的两倍才对.

    ref: https://cfd-china.com/topic/774/圆柱扰流计算与物理现象问题思考/2

    Yours in CFD,

    Ran

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  • 波 Offline
    波 Offline
    波流力
    wrote on last edited by
    #3

    根据横向力做傅里叶变化即可求出频率

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