On the Prandtl's Boundary Layer Theory for Steady Sink-Type Flows

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:辛周平(香港中文大学)
:2023-11-27 09:45
:海韵园实验楼106报告厅

报告人:辛周平香港中文大学

 间:202311279:45

 点:海韵园实验楼106报告厅

内容摘要:

In this talk, I will present some results on the large Reynolds number limits and asymptotic behaviors of solutions to the steady incompressible Navier-Stokes equations in two-dimensional infinitely long convergent nozzles, The main results show that the Prandtl’s laminar boundary layer theory can be rigorously established and the sink-type Euler flow superposed with a self-similar Prandtl’s boundary layer flow is shown to be uniformly structurally stable as long as the viscous flow has a given negative mass flux and the boundaries of the nozzle satisfy a curvature decreasing condition. Furthermore, the asymptotic behaviors of the solutions at both the vertex and infinity can be determined uniquely which plays a key role in the stability analysis. Some of key ideas in the theory will be discussed. This talk is based on a joint work with Dr. Chen Gao.

人简介

辛周平香港中文大学蒙民伟数学讲座教授、数学科学研究所执行所长。在双曲守恒律、高维激波、边界层理论、混合型方程、流体方程、数值计算和方法等领域做出了系统深入的具有重要国际影响的研究成果,谷歌引用超1万2千余次,单篇文章引用近千次,近5年引用超4千次。2002年国际数学家大会上作45分钟报告,获2004年世界华人数学家大会晨兴数学奖金奖、美国斯隆研究奖、美国总统奖、教育部长江讲座教授等。曾任香港数学会会长,是十几种国内外研究期刊的编委或主编。

 

联系人:王焰金