Raviart-Thomas混合元的超收敛
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雷俊丽[1] 林甲富[2]
[1]湖北经济学院经济信息系,湖北武汉430205 [2]北京理工大学应用数学系,北京100081
摘 要:
考虑二阶椭圆方程Dirichlet边值问题在正则矩形网格上忌阶Raviart—Thomas混合有限元的超收敛.对有限元解经插值处理后,与通常的有限元最优误差估计相比,收敛速度提高了两阶.[著者文摘]
文章出处:
《应用数学》-2006年19卷1期 -30-34页
Mathematica Applicata
分 类 号:
文献标识码:
A
文章编号:
1001-9847(2006)01-0030-05
[参考文献]
Superconvergence for the Raviart-Thomas Mixed Finite Element
LEI Jun-li ,LIN Jia-fu (1. Department of Economics and Information, Hubei University of Economics, Wuhan 430205,China;2. Department of Applied Mathematics, Beijing Institute of Technology, Beijing 100081 ,China)
Abstract:
Superconvergence of the k- th Raviart-Thomas mixed finite element for the second order Dirichlet boundary value problem is considered on the regular rectangular meshes. The convergence rate can be increased by two orders compared with the ordinary optimal error estimation by the interpolated postprocessing technique.[著者文摘]
Key words:
Second order elliptic equation; Dirichlet boundary value problem; Raviart-Thomas element ; Mixed finite element ; Superconvergence ; Postprocessing
收稿日期: 2004-11-02

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