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1.它对矩阵进行了哪些操作? 2.比如,在fvSolution中设置:
solver smoothSolver; smoother GaussSeidel;
那么这和教科书上最普通的GaussSeidel迭代有什么区别呢?
最开始这个smooth操作存在在多重网格算法中,实际上就是对误差进行smooth(光顺?)的过程,也是常规求解矩阵的算法,比如高斯赛德尔。OpenFOAM里面如果你按照你那个方法制定,就表示不调用共轭梯度法或者多重网格法之类的,直接用smoother进行求解,指定smoothSolver后,下一步指定具体的smoother。
smooth
smoothSolver
smoother
http://dyfluid.com/mg.html 有点概念上的东西,细说比较复杂。
@李东岳 谢谢东岳老师!明白是什么意思了!