Block-circulant preconditioners for systems arising from discretization of the three-dimensional convection-diffusion equation

William M. Cheung, Michael K. Ng*

*この研究の対応する著者

研究成果: Article査読

9 被引用数 (Scopus)

抄録

We consider the system of equations arising from finite difference discretization of a three-dimensional convection-diffusion model problem. This system is typically nonsymmetric. The GMRES method with the Strang block-circulant preconditioner is proposed for solving this linear system. We show that our preconditioners are invertible and study the spectra of the preconditioned matrices. Numerical results are reported to illustrate the effectiveness of our methods.

本文言語English
ページ(範囲)143-158
ページ数16
ジャーナルJournal of Computational and Applied Mathematics
140
1-2
DOI
出版ステータスPublished - 2002 3 1
外部発表はい

ASJC Scopus subject areas

  • 計算数学
  • 応用数学

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