C0 elements for generalized indefinite Maxwell equations
C0 elements for generalized indefinite Maxwell equations
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广义不定麦克斯韦方程的 C0 元素
DOI:
10.1007/s00211-012-0456-x
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发表时间:
2012-09
影响因子:
2.1
通讯作者:
Roger C. E. Tan
中科院分区:
文献类型:
--
作者:
段火元;Ping Lin;Roger C. E. Tan
In this paper we develop the C0 finite element method for a generalized curlcurl-grad div indefinite Maxwell problem in a Lipschitz domain such as nonconvex polygon for which the solution of the problem may be nonsmooth and only have the Hr regularity for some r < 1. The ingredients of our method are that two ‘mass-lumping’ L2 projectors are applied to curl and div operators in the problem and that C0 linear element or isoparametric bilinear element enriched with one element-bubble on every triangle element or with two-element-bubbles on every quadrilateral element, respectively, is employed for each component of the nonsmooth solution. Due to the fact that the element-bubbles can be statically eliminated at element levels, our method is essentially three-nodes or four-nodes C0 Lagrange element method. With two Fortin-type interpolations established, a very technical duality argument is elaborated to estimate the error for the indefinite problem. For the nonsmooth solution having the Hr regularity where r may vary in the interval [0, 1), we obtain the error bound $${{\mathcal O}(h^r)}$$ in an energy norm. Some numerical experiments are performed to confirm the theoretical error bounds.
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影响因子:
2.1
作者:
P. Houston;I. Perugia;A. Schneebeli;D. Schötzau
通讯作者:
P. Houston;I. Perugia;A. Schneebeli;D. Schötzau
影响因子:
--
作者:
通讯作者:
--
DOI:
10.1090/s0025-5718-03-01520-5
发表时间:
2004
期刊:
Math. Comput.
影响因子:
--
作者:
Huoyuan Duan;G. Liang
通讯作者:
Huoyuan Duan;G. Liang
影响因子:
14.2
作者:
R. Hiptmair
通讯作者:
R. Hiptmair
DOI:
10.1051/m2an/1998320303591
发表时间:
1998
期刊:
Mathematical Modelling and Numerical Analysis
影响因子:
--
作者:
F. Assous;P. Ciarlet;E. Sonnendrücker
通讯作者:
F. Assous;P. Ciarlet;E. Sonnendrücker