Comparison of second- and fourth-order discretizations for multigrid Poisson solvers
Comparison of second- and fourth-order discretizations for multigrid Poisson solvers
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DOI：
10.1006/jcph.1996.5466
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发表时间：
1997-04-01
影响因子：
4.1
通讯作者：
Zhang, J
中科院分区：
文献类型：
--
作者：
Gupta, MM;Kouatchou, J;Zhang, J
将一种紧致的高阶差分近似与多重网格V-循环算法相结合，联合收割机求解二维Poisson方程的Dirichlet边界条件。在串行机和向量机上，与五点公式相比，沿着了几种不同的网格空间和投影算子的排序方法，计算精度有了很大的提高。(C)北京：科学出版社.
We combine a compact high-order difference approximation with multigrid V-cycle algorithm to solve the two-dimensional Poisson equation with Dirichlet boundary conditions. This scheme, along with several different orderings of grid space and projection operators, is compared with the five-point formula to shaw the dramatic improvement in computed accuracy, on serial and vector machines. (C) 1997 Academic Press.