Superconvergence of the Crouzeix-Raviart element for elliptic equation
Superconvergence of the Crouzeix-Raviart element for elliptic equation
复制标题
椭圆方程Crouzeix-Raviart元的超收敛性
DOI:
10.1007/s10444-019-09714-9
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发表时间:
2019-07
影响因子:
1.7
通讯作者:
易年余
中科院分区:
文献类型:
--
作者:
Yidan Zhang;Yunqing Huang;易年余
In this paper, a superconvergence result of the Crouzeix-Raviart element method is derived for the second-order elliptic equation on the uniform triangular meshes, in which any two adjacent triangles form a parallelogram. A local weighted averaging post-processing algorithm for the numerical stress is presented. Based on the equivalence between the Crouzeix-Raviart element method and the lowest order Raviart-Thomas element method, we prove that the error between the exact stress and the postprocessed numerical stress is of orderh3/2. Two numerical examples are presented to confirm the theoretical result.
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影响因子:
2.1
作者:
S. Mao;Zhongci Shi
通讯作者:
S. Mao;Zhongci Shi
DOI:
10.1137/s0036142900371544
发表时间:
2001
期刊:
SIAM J. Numer. Anal.
影响因子:
--
作者:
Bernardo Cockburn;G. Kanschat;I. Perugia;D. Schötzau
通讯作者:
Bernardo Cockburn;G. Kanschat;I. Perugia;D. Schötzau
影响因子:
1.7
作者:
Jim Douglas;J. Wang
通讯作者:
Jim Douglas;J. Wang
影响因子:
5.6
作者:
L. Wahlbin
通讯作者:
L. Wahlbin
影响因子:
3.9
作者:
X. Ye
通讯作者:
X. Ye