Year: 2012
Author: Qiaolin He
Advances in Applied Mathematics and Mechanics, Vol. 4 (2012), Iss. 2 : pp. 238–249
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.
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Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/aamm.10-m11133
Advances in Applied Mathematics and Mechanics, Vol. 4 (2012), Iss. 2 : pp. 238–249
Published online: 2012-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 12
Keywords: Precondition conjugate gradient multigrid finite element.