Condition numbers of finite element methods on a class of anisotropic meshes
Condition numbers of finite element methods on a class of anisotropic meshes
复制标题
一类各向异性网格有限元方法的条件数
DOI:
10.1016/j.apnum.2020.07.018
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发表时间:
2020-12
影响因子:
2.8
通讯作者:
Xun Lu
中科院分区:
文献类型:
--
作者:
Hengguang Li;Xun Lu
We study the behavior of the finite element condition numbers on a class of anisotropic meshes. These newly-developed mesh algorithms can produce numerical approximations with optimal convergence to isotropic and anisotropic singular solutions of elliptic boundary value problems in two- and three-dimensions. Despite the simplicity and fewer geometric constraints in implementation, these meshes can be highly anisotropic and do not maintain the maximum angle condition. We formulate a unified refinement principle and establish sharp estimates on the growth rate of the condition numbers of the stiffness matrix from these meshes. These results are important for effective applications of these meshes and for the design of fast numerical solvers. Numerical tests validate the theoretical analysis.
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DOI:
10.1016/0377-0427(94)00050-b
发表时间:
1995-07
影响因子:
2.4
作者:
J. Lubuma;S. Nicaise
通讯作者:
J. Lubuma;S. Nicaise
DOI:
--
发表时间:
2012
期刊:
--
影响因子:
--
作者:
C. Bacuta;Hengguang Li;V. Nistor
通讯作者:
C. Bacuta;Hengguang Li;V. Nistor
影响因子:
2.1
作者:
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通讯作者:
L. Formaggia;S. Perotto
影响因子:
2.9
作者:
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通讯作者:
T. Apel;B. Heinrich
影响因子:
2.1
作者:
C. Bacuta;V. Nistor;L. Zikatanov
通讯作者:
C. Bacuta;V. Nistor;L. Zikatanov