Speaker: Zhang Zhen, associate professor, Southern University of Science and Technology

Date: April 21, 2025

Time: 10:00 am

Location: B924, Zhixin Building, Shandong University

Sponsor: School of Mathematics, Shandong University

Abstract:

We propose a novel phase-field model for N-phase problems by using a dichotomic representation. Derived from Onsager's variational principle, the proposed model enjoys mechanic, energetic, algebraic and dynamic consistencies and is shown to asymptotically converge to its sharp interface limit. An operator-splitting based numerical method is developed to simulate the model with both second-order accuracy and energy stability. Various numerical results are presented to validate theoretical derivation and show interesting phenomena.

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https://www.view.sdu.edu.cn/info/1020/200957.htm