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A Two-Level Preconditioned Conjugate-Gradient Method in Distorted and Structured Grids |
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| Authors: | Qiaolin He |
| Abstract: | In this paper, we propose a new two-level preconditioned C-G method which uses the quadratic smoothing and the linear correction in distorted but topologically structured grid. The CPU time of this method is less than that of the multigrid preconditioned C-G method (MGCG) using the quadratic element, but their accuracy is almost the same. Numerical experiments and eigenvalue analysis are given and the results show that the proposed two-level preconditioned method is efficient. |
| Keywords: | Precondition conjugate gradient multigrid finite element |
| 点击此处可从《advances in applied mathematics and mechanics.》浏览原始摘要信息 | |
