A modified dimensional split preconditioner for generalized saddle point problems
A modified dimensional split preconditioner for generalized saddle point problems
复制标题
用于广义鞍点问题的改进维数分裂预处理器
DOI:
10.1016/j.cam.2013.02.017
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发表时间:
2013-10
影响因子:
2.4
通讯作者:
Jiang, Mei-Qun
中科院分区:
文献类型:
--
作者:
Cao, Yang;Yao, Lin-Quan;Jiang, Mei-Qun
For large and sparse saddle point linear systems arising from 2D linearized Navier–Stokes equations, Benzi and Guo recently studied a dimensional split (DS) preconditioner (Appl. Numer. Math. 61 (2011) 66–76). By further applying it to generalized saddle point problems, in this paper we present a modified dimensional split (MDS) preconditioner. This new preconditioner is based on a splitting of the generalized saddle point matrix, resulting in an unconditional convergent fixed-point iteration. The basic iteration is accelerated by a Krylov subspace method like restarted GMRES. The implementation of the MDS preconditioner is discussed and a similar case is also analyzed. Finally, numerical experiments of a model Navier–Stokes problem are presented to illustrate the effectiveness of the MDS preconditioner.
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DOI:
10.1137/s0895479899351805
发表时间:
2000-03
期刊:
SIAM J. Matrix Anal. Appl.
影响因子:
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作者:
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通讯作者:
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影响因子:
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期刊:
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影响因子:
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期刊:
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影响因子:
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通讯作者:
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DOI:
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发表时间:
2003-01-01
影响因子:
1.5
作者:
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通讯作者:
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