Krylov improvements of the Uzawa method for Stokes type operator matrices

被引：0
|
作者：
Owe Axelsson
János Karátson
机构：
[1] Institute of Geonics of the Czech Academy of Sciences,Department of Information Technology
[2] Uppsala University,Department of Applied Analysis & MTA
[3] Eötvös Loránd University,ELTE Numerical Analysis and Large Networks Research Group
[4] Budapest University of Technology and Economics,Department of Analysis
来源：
Numerische Mathematik | 2021年 / 148卷
关键词：
65J10; 65F10;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The paper is devoted to Krylov type modifications of the Uzawa method on the operator level for the Stokes problem in order to accelerate convergence. First block preconditioners and their effect on convergence are studied. Then it is shown that a Krylov–Uzawa iteration produces superlinear convergence on smooth domains, and estimation is given on its speed.
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页码：611 / 631
页数：20
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