报告题目：A second order accurate SAV numerical method for the nonlocal ternary conservative Allen-Cahn model
报告人：翁智峰，华侨大学 副教授 硕士生导师
时间、地点： 2023年11月3日（周五）14：30 实验楼819
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.
报告专家简介：
翁智峰，现为华侨大学副教授，硕士生导师，福建省高层次C类人才,主要从事偏微分方程数值计算、相场模型和PDE最优控制问题的数值计算。目前已主持国家自然科学基金青年项目、福建省自然科学基金面上项目、智能计算与信息处理教育部重点实验室开放课题和中央高校基本科研业务费专项项目,2019年入选华侨大学“中青年教师科技创新人才资助计划”,2022年入选泉州市高层次人才第三层次,作为主要参与人获得新疆自治区科技进步二等奖和厦门市科技进步三等奖，在JCP,JSC,IJHMT,NMPDE，NA等国际知名期刊发表SCI论文40余篇，担任美国《Mathematical Review》评论员和《中国理论数学前沿》期刊杂志编委.