AILU for Helmholtz problems: A new preconditioner based on the analytic parabolic factorization

被引：10

作者：

Gander, MJ

Nataf, F

机构：

[1] McGill Univ, Dept Math & Stat, Montreal, PQ H3A 2K6, Canada

[2] Ecole Polytech, CNRS UMR 7641, CMAP, F-91128 Palaiseau, France

来源：

JOURNAL OF COMPUTATIONAL ACOUSTICS | 2001年 / 9卷 / 04期

关键词：

D O I：

10.1016/S0218-396X(01)00151-0

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

We investigate a new type of preconditioner which is based on the analytic factorization of the operator into two parabolic factors. Approximate analytic factorizations lead to new block ILU preconditioners. We analyze the preconditioner at the continuous level where it is possible to optimize its performance. Numerical experiments illustrate the effectiveness of the new approach.

引用

页码：1499 / 1506

页数：8

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