The Crouzeix-Raviart Fe on nonmatching grids with an approximate mortar condition

被引：7
|
作者：
Rahman, Talal
Bjorstad, Petter [1 ]
Xu, Xuejun [2 ]
机构：
[1] Univ Bergen, Dept Math, N-5008 Bergen, Norway
[2] Chinese Acad Sci, Acad Math & Syst Sci, Inst Computat Math, LSEC, Beijing 100080, Peoples R China
来源：
SIAM JOURNAL ON NUMERICAL ANALYSIS | 2008年 / 46卷 / 01期
关键词：
Crouzeix-Raviart finite element; nonmatching grids; mortar condition; additive Schwarz;
D O I：
10.1137/060663593
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
A new approximate mortar condition is proposed for the lowest order Crouzeix-Raviart finite element on nonmatching grids, which uses only the nodal values on the interface for the calculation of the mortar projection. This approach allows for improved and more flexible algorithms compared to those for the standard mortar condition where nodal values in the interior of a subdomain, those closest to a mortar side of the subdomain, are also required in the calculation.
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页码：496 / 516
页数：21
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