An adjoint-based adaptive error approximation of functionals by the hybridizable discontinuous Galerkin method for second-order elliptic equations
An adjoint-based adaptive error approximation of functionals by the hybridizable discontinuous Galerkin method for second-order elliptic equations
复制标题
二阶椭圆方程的可混合间断伽辽金法的基于伴随的泛函自适应误差逼近
DOI:
10.1016/j.jcp.2022.111078
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发表时间:
2022
影响因子:
4.1
通讯作者:
Xia, Shiqiang
中科院分区:
文献类型:
--
作者:
Cockburn, Bernardo;Xia, Shiqiang
This paper presents a novel, fully computable error approximation and mesh adaptation approach for functionals defined by second-order elliptic equations. The functionals are approximated by the hybridizable discontinuous Galerkin (HDG) method and the error approximation is obtained by the adjoint-based method and a local post-processing technique of the HDG method. Unlike most adjoint-based error estimations in the literature, the novelty of our method is that the error approximation is obtained without requiring an auxiliary finer mesh or higher order approximation spaces for solving the adjoint problem. This reduces the computational cost and eases the implementation of the problem. What's more, the local post-processing technique can be carried out in parallel, which speeds up the method even more. We illustrate the method with a second-order elliptic problem and we present examples of three types of functionals: volume integrals; boundary integrals and eigenvalue problems. Numerical tests with adaptive mesh refinements for non-smooth solutions are presented to show that our method is efficient and robust.
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影响因子:
1.3
作者:
S. Funken;Anja Schmidt
通讯作者:
Anja Schmidt
DOI:
10.1137/120874606
发表时间:
2013
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
J. Carpio;J. Prieto;R. Bermejo
通讯作者:
R. Bermejo
影响因子:
2.1
作者:
Bernardo Cockburn;S. Xia
通讯作者:
Bernardo Cockburn;S. Xia
DOI:
10.1137/070698853
发表时间:
2009
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
R. Bermejo;J. Carpio
通讯作者:
J. Carpio
影响因子:
2.5
作者:
Bernardo Cockburn;Zhu Wang
通讯作者:
Zhu Wang