A low-order block preconditioner for saddle point linear systems

被引:0
|
作者
Yi-Fen Ke
Chang-Feng Ma
机构
[1] Fujian Normal University,School of Mathematics and Computer Science and FJKLMAA
来源
关键词
Saddle point problem; Preconditioner; Eigenvalue distribution; 65F10; 65F08; 65F50;
D O I
暂无
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学科分类号
摘要
A preconditioner is proposed for the large and sparse linear saddle point problems, which is based on a low-order three-by-three block saddle point form. The eigenvalue distribution and an upper bound of the degree of the minimal polynomial for the preconditioned matrix are discussed. Numerical results show that the optimal convergence behavior can be achieved when the new preconditioner is used to accelerate the convergence rate of Krylov subspace methods such as GMRES.
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页码:1959 / 1970
页数:11
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