Petsc求解poisson方程，两种方法的比较

Others 2021-12-14 23:58:09 views: null

第一种方法只需要利用前面提到的矩阵和向量搭建

前面几篇博客提到了矩阵，向量的搭建，本人也介绍来求解任意大小的线性系统的方法，下面本人先介绍不调用Petsc任何有关的包的求解方法，为此先引入基本定义：
− Δ u = f , x ∈ Ω = ( 0 , 1 ) 2 -\Delta u = f,x \in \Omega=(0,1)^2 −Δ

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