Discrete maximum principle based on repair technique for diamond type scheme of diffusion problems
Discrete maximum principle based on repair technique for diamond type scheme of diffusion problems
复制标题
基于离散极大值原理的扩散问题菱形格式修复技术
DOI:
10.1002/fld.2746
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发表时间:
2012-11
影响因子:
1.8
通讯作者:
Sheng,Zhiqiang
中科院分区:
文献类型:
--
作者:
Li,Yonghai;Yuan,Guangwei;Wang,Shuai;Sheng,Zhiqiang
In this paper, two repair techniques are proposed for diamond schemes of anisotropic diffusion problems to ensure that the repaired solutions satisfy the discrete maximum principle. One of them is an extension of that in [Liska R, Shashkov M. Enforcing the discrete maximum principle for linear finite element solutions of second‐order elliptic problems. Communications in Computational Physics 2008; 3(4):852–877.] for linear finite element solutions, which is a local repair technique, and another is a new global repair technique. Both of them keep total energy conservation and are easy to be implemented in existing codes. Numerical examples show that these two repair techniques do not destroy the accuracy of solution for the diamond schemes on distorted meshes. Copyright © 2012 John Wiley & Sons, Ltd.
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