New construction and ultraconvergence of derivative recovery operator for odd-degree rectangular elements

被引:10
|
作者
Zhu, QD [1 ]
Meng, LX [1 ]
机构
[1] Hunan Normal Univ, Coll Math & Comp Sci, Changsha 410081, Peoples R China
来源
SCIENCE IN CHINA SERIES A-MATHEMATICS | 2004年 / 47卷 / 06期
关键词
SPR; derivative recovery operator; projection type interpolation; ultraconvergence;
D O I
10.1360/02ys0329
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In this paper the ultraconvergence of the derivative for odd-degree rectangular elements is addressed. A new, discrete least-squares patch recovery technique is proposed to post-process the solution derivatives. Such recovered derivatives are shown to possess ultraconvergence by using projection type interpolation.
引用
收藏
页码:940 / 949
页数:10
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