A block circulant preconditioner for the convection-diffusion equation

被引：0

作者：

Karaa, S ^{[1
]}

机构：

[1] Univ Toulouse 3, CNRS UMR 5640, Lab Math Ind Phys, F-31062 Toulouse, France

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE I-MATHEMATIQUE | 2000年 / 330卷 / 09期

关键词：

D O I：

10.1016/S0764-4442(00)00261-5

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

We define and analyse a block version of Strang's circulant preconditioner for a convection-diffusion problem. We construct an equivalent symmetric problem which allows to employ the conjugate gradient method, and avoid more general iterative methods, such as GMRES. A block circulant preconditioner can also be constructed for the two-dimensional Euler equations, and used in combination with Runge-Kutta iterations. (C) 2000 Academie des sciences/Editions scientifiques et medicales Elsevier SAS.

引用

页码：851 / 856

页数：6

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