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Parameter-Free Time Adaptivity Based on Energy Evolution for the Cahn-Hilliard Equation

Published online by Cambridge University Press:  17 May 2016

Fuesheng Luo*
Affiliation:
The Third Institute of Oceanography, SOA, Xiamen 361005, China
Tao Tang*
Affiliation:
Department of Mathematics, Southern University of Science and Technology of China, Shenzhen, Guangdong 518055, China Department of Mathematics, Hong Kong Baptist University, Kowloon Tong, Hong Kong
Hehu Xie*
Affiliation:
LSEC, ICMSEC, NCMIS, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing 100190, China
*
*Corresponding author. Email addresses:luofusheng@tio.org.cn (F. Luo), tangt@sustc.edu.cn (T. Tang), hhxie@lsec.cc.ac.cn (H. Xie)
*Corresponding author. Email addresses:luofusheng@tio.org.cn (F. Luo), tangt@sustc.edu.cn (T. Tang), hhxie@lsec.cc.ac.cn (H. Xie)
*Corresponding author. Email addresses:luofusheng@tio.org.cn (F. Luo), tangt@sustc.edu.cn (T. Tang), hhxie@lsec.cc.ac.cn (H. Xie)

Abstract

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It is known that large time-stepping method are useful for simulating phase field models. In this work, an adaptive time-stepping strategy is proposed based on numerical energy stability and equi-distribution principle. The main idea is to use the energy variation as an indicator to update the time step, so that the resulting algorithm is free of user-defined parameters, which is different from several existing approaches. Some numerical experiments are presented to illustrate the effectiveness of the algorithms.

Information

Type
Research Article
Copyright
Copyright © Global-Science Press 2016