学术报告

题      目：Dynamical magneto-rotational instability

报  告  人：王钰聪  副教授  (邀请人：王勇 )

                                    湘潭大学

时      间：11月22日  17：00-18：00

地     点：数科院西楼111报告厅

报告人简介:

        王钰聪，湘潭大学数学与计算科学学院副教授。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。

摘      要：

        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.

        欢迎老师、同学们参加、交流！