應(yīng)yl7703永利官網(wǎng)徐強(qiáng)副教授邀請，紐約大學(xué)（Abu Dhabi）博士后李徽將于2022年5月30日在線舉辦專題學(xué)術(shù)講座，熱忱歡迎諸位老師、研究生的參加。

報告題目: New energy method in the study of the instability near Couette flow

時間：5月30日下午3:00。

地點：理工樓518(騰訊會議)。

騰訊會議ID: 523 228 160

摘要: Hydrodynamic stability is an active field of fluid mechanics which deals with the stability and the instability of fluid flows. Mathematically, this kind of problems can be reduced to the study of the semi-group estimate related to the linearized operator. However, it is difficult to use the energy method to capture the growth of the semi-group and obtain its lower bound, especially if the growth is a transient growth. In this talk, I will present a new energy method to study the lower bound of the semi-group generated by a time-dependent linearized operator. This new energy method gives the growth mechanism of unstable shear flows, with which we prove two open questions about the instability of shear flows for Navier-Stokes and Euler equations. This is a joint work with Nader Masmoudi and Weiren Zhao.

報告人簡介

李徽，博士畢業(yè)于北京大學(xué)（2014-2019）；2019-2021在浙江大學(xué)從事博士后研究工作；2021-至今在紐約大學(xué)（Abu Dhabi）繼續(xù)從事博士后研究工作。主要研究興趣為流體運動中的自由邊值問題以及流動穩(wěn)定性問題，研究成果已在SIAM JMA, JFA, JDE等國際一流數(shù)學(xué)期刊發(fā)表。

甘肅應(yīng)用數(shù)學(xué)中心

甘肅省高校應(yīng)用數(shù)學(xué)與復(fù)雜系統(tǒng)省級重點實驗室

yl7703永利官網(wǎng)

萃英學(xué)院

2022年5月26日