Analysis of recovery type a posteriori error estimators for mildly structured grids

被引：1

作者：

Xu, JC ^{[1
]}

Zhang, ZM

机构：

[1] Penn State Univ, Dept Math, Ctr Computat Math & Applicat, University Pk, PA 16802 USA

[2] Wayne State Univ, Dept Math, Detroit, MI 48202 USA

来源：

MATHEMATICS OF COMPUTATION | 2004年 / 73卷 / 247期

关键词：

gradient recovery; ZZ patch recovery; superconvergence; a posteriori error estimates;

D O I：

暂无

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

Some recovery type error estimators for linear finite elements are analyzed under O(h(1+alpha)) (alpha > 0) regular grids. Superconvergence of order O(h(1+rho)) (0 < rho <= alpha) is established for recovered gradients by three different methods. As a consequence, a posteriori error estimators based on those recovery methods are asymptotically exact.

引用

页码：1139 / 1152

页数：14

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