报告题目：Dynamical magneto-rotational instability

报告人：王钰聪（湘潭大学）

报告时间：2023年11月12日14:15-15:15

报告地点：88038威尼斯323（腾讯会议932 495 5583）

邀请单位：88038威尼斯

报告内容简介：

Magneto-rotational instability (MRI) is an important instability mechanism for rotating flows with magnetic field. In particular, when the strength of the magnetic field tends to zero, the stability criterion for rotating flow is different from the classical Rayleigh criterion for rotating flow without magnetic field. MRI had found many physical applications, for example in the explanation of turbulence and momentum transport in accretion disks. We gave the first rigorous proof of linear MRI and a complete description of the spectra. Moreover, we prove nonlinear stability and instability from the linear stability/instability criteria.This work is joint with Zhiwu Lin and Wenpei Wu.

报告人简介：

王钰聪，湘潭大学数学与计算科学学院教师。他的研究方向是偏微分方程的稳定性理论。主要关注与天体物理模型相关的偏微分方程的稳定性问题，例如可压Euler-Poisson方程，不可压理想MHD方程的稳定性问题。成果发表于CMP等学术杂志上。