Volume 4, Issue 2
A Two-Level Preconditioned Conjugate-Gradient Method in Distorted and Structured Grids

Qiaolin He

10.4208/aamm.10-m11133

Adv. Appl. Math. Mech., 4 (2012), pp. 238-249.

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  • 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.

  • History

Published online: 2012-04

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