本文使用DES (Detached eddy simulation)湍流模型,计算了Re=3900时的三维圆柱扰流.采用一种简化的二阶精度的浸入边界方法处理无滑移固体边界,时间上二阶精度的投影算法求解不可压流体NS方程.只使用了36万网格数,远远低于文献中大涡模拟计算的网格数.计算结果验证了DES模型的可靠性,为进一步开展湍流模型的多尺度计算打下基础.
参考文献
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