A small stencil and extremum-preserving scheme for anisotropic diffusion problems on arbitrary 2D and 3D meshes
A small stencil and extremum-preserving scheme for anisotropic diffusion problems on arbitrary 2D and 3D meshes
复制标题
针对任意 2D 和 3D 网格上的各向异性扩散问题的小型模板和极值保持方案
DOI:
10.1016/j.jcp.2013.05.013
复制
发表时间:
2013-10
影响因子:
4.1
通讯作者:
Wu, Jiming
中科院分区:
文献类型:
--
作者:
Gao, Zhiming;Wu, Jiming
In this paper a nonlinear extremum-preserving scheme for the heterogeneous and anisotropic diffusion problems is proposed on general 2D and 3D meshes through a certain linearity-preserving approach. The so-called harmonic averaging points located at the interface of heterogeneity are employed to define the auxiliary unknowns. This new scheme is locally conservative, has only cell-centered unknowns and possesses a small stencil, which is five-point on the structured quadrilateral meshes and seven-point on the structured hexahedral meshes. The stability result in H1norm is obtained under quite general assumptions. Numerical results show that our scheme is robust and extremum-preserving, and the optimal convergence rates are verified on general distorted meshes in case that the diffusion tensor is taken to be anisotropic, at times discontinuous.
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影响因子:
4.1
作者:
Wu, Jiming;Gao, Zhiming;Dai, Zihuan
通讯作者:
Dai, Zihuan
影响因子:
4.1
作者:
Yuan, Guangwei;Sheng, Zhiqiang
通讯作者:
Sheng, Zhiqiang
DOI:
10.1016/j.jcp.2007.07.026
发表时间:
2007-07
期刊:
J. Comput. Phys.
影响因子:
--
作者:
P. Sharma;G. Hammett
通讯作者:
P. Sharma;G. Hammett
DOI:
10.1051/m2an/2011040
发表时间:
2012-03
期刊:
Mathematical Modelling and Numerical Analysis
影响因子:
--
作者:
R. Eymard;Cindy Guichard;R. Herbin
通讯作者:
R. Eymard;Cindy Guichard;R. Herbin
影响因子:
4.1
作者:
Audoly, B.;Clauvelin, N.;Wardetzky, M.
通讯作者:
Wardetzky, M.