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目前网格质量在ICEM中为0.6,在openfoam中求解不可压缩情况时可以收敛,但求解buossinesq假设情况下的方程就会发散,速度取1m/s时,y+值为100,取0.003m/s时y+为1,且不论采用komegasst模型或是湍流模型均会发散,想请问各位大佬是否与y+值过大有关系呢?
网格只是全都正交的空计算域网格,还是有放几何的网格。记得之前用ICEM的 o-block 画的方柱网格,看起来质量还行,其实网格质量很差,用fluent的PISO求解器都发散