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本人小白,有个疑问:为什么在做流体仿真的时候设置完边界条件后,还要进行初始化后才能开始计算。而做固体有限元分析的时候设置完边界条件后就可以直接开始计算了?照理说微分方程有边界条件后就可以确定唯一的解了,想不明白初始化的目的是什么,各位老师可不可以深入浅出的给我讲解一下?谢谢