Fast Algorithm Based on TT-M FE Method for Allen-Cahn Equation

East Asian Journal on Applied Mathematics
Vol. 10 No. 2 (2020), pp. 316-337
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Author(s)
, , ,
1 google
2 Taiyuan Univ Technol, Dept Math, Taiyuan 030024, Peoples R China
3 Department of Mathematics, Taiyuan University of Technology, 030024 Taiyuan, China.
Received
January 26, 2019
Accepted
July 22, 2019
Abstract

A fast time two-mesh finite element algorithm using coarse and fine meshes is applied to the nonlinear Allen-Cahn equation. The stability and convergence of the method are studied and detailed error estimates are provided. Numerical examples confirm the theoretical results. Traditional Galerkin finite element and time two-mesh finite element methods are compared with respect to CPU time, accuracy and coarsening processing. Numerical experiments show the efficiency and effectiveness of the fast algorithm proposed.

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