Linearity preserving nine-point schemes for diffusion equation on distorted quadrilateral meshes
Linearity preserving nine-point schemes for diffusion equation on distorted quadrilateral meshes
复制标题
扭曲四边形网格上扩散方程的线性保持九点格式
DOI:
10.1016/j.jcp.2010.01.007
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发表时间:
2010-05
影响因子:
4.1
通讯作者:
Dai, Zihuan
中科院分区:
文献类型:
--
作者:
Wu, Jiming;Yuan, Guangwei;Gao, Zhiming;Dai, Zihuan
In this paper, we employ the so-called linearity preserving method, which requires that a difference scheme should be exact on linear solutions, to derive a nine-point difference scheme for the numerical solution of diffusion equation on the structured quadrilateral meshes. This scheme uses firstly both cell-centered unknowns and vertex unknowns, and then the vertex unknowns are treated as a linear combination of the surrounding cell-centered unknowns, which reduces the scheme to a cell-centered one. The weights in the linear combination are derived through the linearity preserving approach and can be obtained by solving a local linear system whose solvability is rigorously discussed. Moreover, the relations between our linearity preserving scheme and some existing schemes are also discussed, by which a generalized multipoint flux approximation scheme based on the linearity preserving criterion is suggested. Numerical experiments show that the linearity preserving schemes in this paper have nearly second order accuracy on many highly skewed and highly distorted structured quadrilateral meshes.
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DOI:
10.1016/j.jcp.2008.11.031
发表时间:
2009-04
期刊:
J. Comput. Phys.
影响因子:
--
作者:
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通讯作者:
M. Basko;J. Maruhn;A. Tauschwitz
DOI:
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发表时间:
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期刊:
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影响因子:
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作者:
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通讯作者:
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DOI:
10.1137/050638473
发表时间:
2006-09
期刊:
SIAM J. Numer. Anal.
影响因子:
--
作者:
M. Wheeler;I. Yotov
通讯作者:
M. Wheeler;I. Yotov
影响因子:
4.4
作者:
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通讯作者:
A. Poynter
DOI:
--
发表时间:
2008
期刊:
High Power Laser and Particle Beams
影响因子:
--
作者:
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通讯作者:
Dai Zi-huan