应6163银河线路检测中心数学系赵景军教授的邀请,吉林大学6163银河线路检测中心张凯教授来访并做学术报告,欢迎感兴趣的师生参加。
报告题目:A robust numerical method for the Maxwell equations with random interfaces via shape calculus and
low-rank approximation
报告时间:2018年12月4日14:30-15:30
报告地点:格物楼503
摘要:
A robust numerical method via the shape derivatives and low-rank approximation is developed for computations of three-dimensional Maxwell's equations with random interfaces. Based on a shape calculus, we estimate the statistical moments of the stochastic Maxwell equations in terms of perturbation magnitude. In order to capture the oscillations with high resolution near the interface, we adopt the adaptive edge element with third order polynomials to solve the deterministic equations approximating the expectation. For the second moment, an efficient low-rank approximation based on pivoted Cholesky decomposition is proposed to compute the two-point correlation function to approximate the variance of stochastic Maxwell's equations. Numerical experiments are presented to illustrate our theoretical results.
个人简介:
张凯:吉林大学6163银河线路检测中心教授、博士生导师。1999年本科毕业于吉林大学数学系,2006年获吉林大学博士学位。博士论文被评为吉林省优秀博士论文。2008年获得香港中文大学联合培养博士学位,2008年至2010年赴密歇根州立大学开展博士后研究,曾先后赴伊利诺伊州立大学,奥本大学等开展合作研究。主要研究兴趣为随机偏微分方程的数值解法。主要从事SPDE控制优化问题的数值方法、期权定价、随机麦克斯韦方程和随机声波方程的研究。先后主持国家自然科学基金等项目10项,发表论文40余篇,其中SCI论文30余篇。