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。
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