Seminar第2082期 On the long-wave approximation for the Euler-Poisson system

创建时间:  2021/03/23  谭福平   浏览次数:   返回

报告主题:On the long-wave approximation for the Euler-Poisson system

报告人:杨雄锋 教授(上海交通大学)

报告时间:2021年3月25日(周四)10:00

报告形式:腾讯会议

会议ID:327 556 427

会议密码:201221

邀请人:刘见礼

报告摘要: In this talk, I will present the study of the long wave approximation to the Euler-Poisson system of the ion-acoustic wave in cold plasma according to the spatial-temporal scale and the amplitude of waves. We first justify rigorously that in the long-wave limit, the one-way propagating solutions of the Euler-Poisson system are well approximated by the unidirectional solutions of the Burgers-or KdV equation with the different parameter scales. We then demonstrate that the solutions could be convergent to two wave packets in opposite directions, where each wave packet involves independently as a solution of the Burgers-or KdV equation.

报告人简介:杨雄锋,上海交通大学数学与科学学院教授,研究方向为偏微分方程。主要研究内容有: 动理学方程及其边界层问题的适定性,流体力学方程解的逐点性质以及耗散系统基本波的稳定性理论,这些内容都是偏微分方程基础理论研究中的重要课题。相关的文章发表在Adv. Math., Arch. Ration. Mech. Anal. , Siam J. Math. Anal., J. Diff. Equations, Comm. Part. Diff. Eqns. 等重要数学期刊上。另外,报告人曾多次获得国家自然科学基金委资助,并在2011年获得上海市自然科学一等奖。


欢迎教师、学生参加!

上一条:Seminar第2083期 Long-time asymptotically via the Deift-Zhou nonlinear steepest descent

下一条:Seminar第2079期 Quasi-Orthogonal Z-Complementary Pairs and Their Applications in Fully Polarimetric Radar Systems

  版权所有 © 上海大学   沪ICP备09014157   沪公网安备31009102000049号  地址:上海市宝山区上大路99号    邮编:200444   电话查询
 技术支持:上海大学信息化工作办公室   联系我们