Hessian recovery based finite element methods for the Cahn-Hilliard equation
Hessian recovery based finite element methods for the Cahn-Hilliard equation
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Cahn-Hilliard 方程基于 Hessian 恢复的有限元方法
DOI:
10.1016/j.jcp.2019.01.056
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发表时间:
2018-10
影响因子:
4.1
通讯作者:
Qingsong Zou
中科院分区:
文献类型:
--
作者:
Minqiang Xu;Hailong Guo;Qingsong Zou
In this paper, we propose several novel recovery based finite element methods for the 2D Cahn-Hilliard equation. One distinguishing feature of those methods is that we discretize the fourth-order differential operator in a standard C 0 linear finite elements space. Precisely, we first transform the fourth-order Cahn-Hilliard equation to its variational formulation in which only first-order and second-order derivatives are involved and then we compute the first and second-order derivatives of a linear finite element function by a least-squares fitting recovery procedure. When the underlying mesh is uniform meshes of regular pattern, our recovery scheme for the Laplacian operator coincides with the well-known five-point stencil. Another feature of the methods is some special treatments on Neumann type boundary conditions for reducing computational cost. The optimal-order convergence and energy stability are numerically proved through a series of benchmark tests. The proposed method can be regarded as a combination of the finite difference scheme and the finite element scheme.
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影响因子:
2
作者:
Hailong Guo;Zhimin Zhang;Ren Zhao
通讯作者:
Ren Zhao
影响因子:
3.7
作者:
Yan Yue;Chen Wenbin;Wang Cheng;Wise Steven M.
通讯作者:
Wise Steven M.
影响因子:
1.1
作者:
Jie Shen;Xiaofeng Yang
通讯作者:
Jie Shen;Xiaofeng Yang
DOI:
10.1016/s0045-7825(02)00286-4
发表时间:
2002-07
影响因子:
7.2
作者:
G. Engel;K. Garikipati;T. Hughes;M. Larson;L. Mazzei;R. Taylor
通讯作者:
G. Engel;K. Garikipati;T. Hughes;M. Larson;L. Mazzei;R. Taylor
DOI:
10.1137/s1064827503402837
发表时间:
2005-04
期刊:
SIAM J. Sci. Comput.
影响因子:
--
作者:
Zhimin Zhang;Ahmed Naga
通讯作者:
Zhimin Zhang;Ahmed Naga