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【Coll. 0718】Prof. Dong Li: Stability of Semi-implicit Methods in Phase Field Models
时间:2017-07-18  浏览:289次

Stability of Semi-implicit Methods in Phase Field Models

 

Prof. Dong LI (dli@math.ubc.ca)

 

Department of Mathematics, University of British Columbia, 1984 Mathematics Road, Vancouver, BC V6T1Z2, Canada

 

Abstract: Recent results in the literature provide computational evidence that stabilized semi-implicit time-stepping method can efficiently simulate phase field problems involving fourth-order nonlinear diffusion, with typical examples like the Cahn-Hilliard equation and the thin film type equation. The up-to-date theoretical explanation of the numerical stability relies on the assumption that the derivative of the nonlinear potential function satisfies a Lipschitz type condition, which in a rigorous sense, implies the boundedness of the numerical solution. I will discuss a group of recent results which remove the Lipschitz assumption on the nonlinearity and prove unconditional energy stability for the stabilized semi-implicit time-stepping methods. Time permitting I will also mention some more recent developments.

Time: 2017-07-18 14:00-15:00

Address: Room 316, The environment building of Renmin University of China

 



报告时间:2017-07-18 14:00 - 15:00

报告地点:人民大学环境楼316会议室