A Non-uniform Time-stepping Convex Splitting Scheme for the Time-fractional Cahn-Hilliard Equation
A Non-uniform Time-stepping Convex Splitting Scheme for the Time-fractional Cahn-Hilliard Equation
复制标题
时间分数式Cahn-Hilliard方程的非均匀时间步长凸分裂方案
DOI:
10.1016/j.camwa.2020.04.031
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发表时间:
2020-06
影响因子:
2.9
通讯作者:
JinRong Wang
中科院分区:
文献类型:
--
作者:
Jun Zhang;Jia Zhao;JinRong Wang
In this paper, a non-uniform time-stepping convex-splitting numerical algorithm for solving the widely used time-fractional Cahn–Hilliard equation is introduced. The proposed numerical scheme employs the L 1+ formula for discretizing the time-fractional derivative and a second-order convex-splitting technique to deal with the non-linear term semi-implicitly. Then the pseudospectral method is utilized for spatial discretization. As a result, the fully discrete scheme has several advantages: second-order accurate in time, spectrally accurate in space, uniquely solvable, mass preserving, and unconditionally energy stable. Rigorous proofs are given, along with several numerical results to verify the theoretical results, and to show the accuracy and effectiveness of the proposed scheme. Also, some interesting phase separation dynamics of the time-fractional Cahn–Hilliard equation has been investigated.
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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:
2.5
作者:
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DOI:
10.1137/110822839
发表时间:
2012
期刊:
SIAM J. Numer. Anal.
影响因子:
--
作者:
Jie Shen;Cheng Wang;Xiaoming Wang;S. Wise
通讯作者:
Jie Shen;Cheng Wang;Xiaoming Wang;S. Wise
影响因子:
1.9
作者:
J. F. Blowey;C. M. Elliott
通讯作者:
J. F. Blowey;C. M. Elliott
DOI:
10.1016/0377-0427(95)00025-9
发表时间:
1996-04
影响因子:
2.4
作者:
W. McLean;V. Thomée;L. Wahlbin
通讯作者:
W. McLean;V. Thomée;L. Wahlbin