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大家好,我在计算小扰动条件下的流动问题。射流速度入口条件是U=1.5+0.45sin(2Pi100). 算例中平均流速已经很小,施加弱扰动后感觉扰动很快被耗散掉了,有什么解决办法吗? 注:求解器采用reactingFoam(该求解器采用的pimple算法),离散格式为中心差分