浙江快乐彩基本走势012:Numerical methods for fractional phase-field flows

浙江快乐彩12造5 www.ewpyt.com 發布者:文明辦作者:發布時間:2019-11-28瀏覽次數:35


主講人:宋方應 福州大學研究員


時間:2019年11月29日15:30


地點:3號樓301


舉辦單位:數理學院


內容介紹:In this talk, we will introduce fractional multi-phase models based on free  energy gradient flows. We develop a fractional extension of a mass-conserving  Allen–Cahn/Cahn-Hilliard phase field model that describes the mixture of two  incompressible fluids. The fractional order controls the sharpness of the  interface, which is typically diffusive in integer-order phase-field models. The  spatial discretization is based on a spectral method. We will introduce several  stabilized schemes for the temporal discretization including alternatively  direction implicit (ADI) and a variant of scalar auxiliary variable (SAV)  methods. Finally, we will present some numerical results to demonstrate the  efficiency of the numerical methods in terms of stability and accuracy.