A Subspace Cascadic Multigrid Method for Mortar Elements

被引：1

作者：

D. Braess

P. Deuflhard

K. Lipnikov

机构：

[1] Faculty of Mathematics Ruhr-University D-44780 Bochum Germany e-mail: braess@num.ruhr-uni-bochum.de,

[2] Department of Mathematics University of Houston Houston TX 77204-3476 USA e-mail: lipnikov@math.uh.edu,undefined

[3] Konrad-Zuse-Zentrum Berlin (ZIB) & Freie Universität Berlin Takustrasse 7 & Arnimallee 2–6 D-14195 Berlin Germany e-mail: deuflhard@zib.de,undefined

来源：

Computing | 2002年 / 69卷

关键词：

AMS Subject Classification: 65N55.; Keywords: cascadic multigrid method, domain decomposition, mortar elements, non-matching grids, material jumps.;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A cascadic multigrid (CMG) method for elliptic problems with strong material jumps is proposed and analyzed. Non–matching grids at interfaces between subdomains are allowed and treated by mortar elements. The arising saddle point problems are solved by a subspace confined conjugate gradient method as smoother for the CMG. Details of algorithmic realization including adaptivity are elaborated. Numerical results illustrate the efficiency of the new subspace CMG algorithm.

引用

页码：205 / 225

页数：20

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