科学研究
报告题目:

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:

报告地点:

腾讯会议 ID:382 522 459 会议密码:0731

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.

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