报告题目:Energy-conserving \ energy-decaying finite element method for 3D Maxwell's equations with an instantaneous \ delayed nonlinear boundary condition
报告人:姚昌辉
工作单位:郑州大学
报告时间:2023年11月18日下午2:30-4:30.
报告地点:我院305
报告摘要:In this report, an energy-conserving & energy-decaying finite element method is proposed for Maxwell's equations with an instantaneous \ delayed nonlinear boundary condition. After the energy-conserving \ energy-decaying property of the model is proved by mathematical techniques, a second-order time-discrete finite element scheme can be designed. This nonlinear numerical scheme can be demonstrated to be discrete energy-conserving \ energy-decaying. Furthermore, this scheme is also uniquely solvable by fixed point theorem. With the aid of the projection operator, the stability analysis and the error estimate with convergence order $O(\Delta t^2+h^{s-\frac{1}{2}})$ is obtained, respectively. In addition, several numerical examples are provided to illustrate these conclusions.
报告人简介:姚昌辉,男,1977年01月出生,博士、教授、博士生导师,河南省特聘教授。中国仿真学会不确定性系统分析与仿真专业委员会委员,中国数学会计算数学分会常务理事,河南省智能图像学会常务理事。2006年6月在中国科学院获得计算数学专业理学博士学位, 2008在挪威Bergen大学获得应用数学专业哲学博士学位。 曾主持国家自然科学基金青年基金1项,国家自然科学基金面上项目2项,参与完成国家自然科学基金面上项目2项,主要侧重于对电磁场问题的数值方法研究。编著河南省“十四五”普通高等教育规划教材《数值分析》,2022年获得由河南省人民政府颁发的“河南省自然科学奖”二等奖。