報(bào)告題目：A second order accurate SAV numerical method for the nonlocal ternary conservative Allen-Cahn model
報(bào)告人：翁智峰 副教授（華僑大學(xué)）
報(bào)告時(shí)間：11月19日（周二）10:00-11:00
主持人：袁健華 教授
報(bào)告地點(diǎn)：沙河校區(qū)理學(xué)樓520
報(bào)告摘要：
The nonlocal model has attracted a great attention in materials field for describing various types of material heterogeneities and defects. In this paper, we are concerned with construction of energy stability numerical methods for the nonlocal ternary conservative Allen-Cahn model, two different Lagrange multipliers to enforce conservation of mass are considered, respectively. By employing a stabilized scalar auxiliary variable (S-SAV) approach with second-order backward differentiation formula in temporal, two fast and effective schemes are established. The unconditional energy stability and mass conservation are rigorously derived. Numerical experiments are presented to verify theoretical results and to show the robustness and accuracy of the proposed method.
報(bào)告人簡(jiǎn)介：
翁智峰，現(xiàn)為華僑大學(xué)副教授，碩士生導(dǎo)師，福建省高層次C類(lèi)人才,主要從事偏微分方程數(shù)值計(jì)算、相場(chǎng)模型和PDE最優(yōu)控制問(wèn)題的數(shù)值計(jì)算，已主持國(guó)家級(jí)和省部級(jí)課題4項(xiàng),在JCP,JSC,IJHMT,NA等國(guó)際知名期刊發(fā)表SCI論文40余篇，作為主要完成人獲得新疆維吾爾自治區(qū)科技進(jìn)步二等獎(jiǎng)和福建省科技進(jìn)步三等獎(jiǎng)，擔(dān)任中國(guó)自動(dòng)化學(xué)會(huì)分?jǐn)?shù)階系統(tǒng)與控制專(zhuān)業(yè)委員、福建省生物數(shù)學(xué)學(xué)會(huì)理事、美國(guó)《Mathematical Review》評(píng)論員和《中國(guó)理論數(shù)學(xué)前沿》期刊雜志編委。
