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库郎数取0.5，打开自动调节时间步长后，时间步长随着计算减小很多，过一段时间就发散了，但是关闭自动调节时间步长后，计算中courant number max越来越大，已经超过1了，如何解决，急求啊
能否留下联系方式，我也用到interphasechangefoam
