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最近看pisoFoam代码,发现动量方程组建之后,也有UEqn.relax(),对速度进行了松弛。但是看更早版本OF中的turbFoam,是没有UEqn.relax()。
请问pisoFoam中加入UEqn.relax这一步在实际计算中是调用的么?因为似乎没看到piso的算例在fvSolution中定义relaxationFactors.
@aiweimo
UEqn.relax() ,即使松弛因子是1,其实也会对 UEqn 的 系数矩阵进行一些调整,以使它更满足对角占优。fvSolution 里面如果没有定义松弛因子,则默认值为1。