Expandable Parallel Finite Element Methods for Linear Elliptic Problems
Expandable Parallel Finite Element Methods for Linear Elliptic Problems
复制标题
线性椭圆问题的可扩展并行有限元方法
DOI:
10.1007/s10473-020-0218-2
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发表时间:
2020-03
影响因子:
1
通讯作者:
Du Guangzhi
中科院分区:
文献类型:
--
作者:
Du Guangzhi
In this article, two kinds of expandable parallel finite element methods, based on two-grid discretizations, are given to solve the linear elliptic problems. Compared with the classical local and parallel finite element methods, there are two attractive features of the methods shown in this article: 1) a partition of unity is used to generate a series of local and independent subproblems to guarantee the final approximation globally continuous; 2) the computational domain of each local subproblem is contained in a ball with radius ofO(H) (His the coarse mesh parameter), which means methods in this article are more suitable for parallel computing in a large parallel computer system. Some a priori error estimation are obtained and optimal error bounds in bothH1-normal andL2-normal are derived. Finally, numerical results are reported to test and verify the feasibility and validity of our methods.
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DOI:
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