Two-level preconditioners with projectors for unstructured grids

被引：7
|
作者：
Kuznetsov, YA
机构：
[1] Russian Acad Sci, Inst Numer Math, Moscow 117951, Russia
[2] Univ Houston, Dept Math, Houston, TX 77204 USA
来源：
RUSSIAN JOURNAL OF NUMERICAL ANALYSIS AND MATHEMATICAL MODELLING | 2000年 / 15卷 / 3-4期
关键词：
D O I：
10.1515/rnam.2000.15.3-4.247
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
A new approach to construction of the two-level preconditioners for elliptic finite element problems on unstructured grids is presented. The approach is based on coupling the nonoverlapping domain decomposition method with the special technique for modifying the subdomain stiffness matrices. The proposed preconditioner is a low rank perturbation of the lumped mass matrix Condition number estimates and implementation algorithms are given.
引用
收藏
页码：247 / 255
页数：9
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