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科学研究
RESEARCH
[COLLOQUIUM] Subsonic and Sonic Jet Flows
时间  Datetime
2020-07-13 16:00 — 17:00
地点  Venue
Zoom APP(2)()
报告人  Speaker
辛周平 教授
单位  Affiliation
香港中文大学
邀请人  Host
吴文俊数学中心
备注  remarks
会议号:996 500 648 59 ,密码:130 769
报告摘要  Abstract

In this talk, I will discuss some results on jet flows for the steady compressible potential flows from a finite converging nozzle. Both subsonic and sonic jets will be considered which correspond to some free boundary problems for uniform and degenerate elliptic equations respectively. An important feature is that such problems do not have a variational structure. Formulation of the problems and the existence (and non-existence) of solutions will be discussed. Both finite jets and infinite jets can be obtained by a PDE approach and regularity and properties of the solutions, in particular the location of degeneracy, will be discussed.



人物简介:

辛周平,香港中文大学蒙民伟数学讲座教授、数学科学研究所常务所长。辛教授是偏微分方程的理论分析、数值计算及其应用,和非线性波、数学物理、流体力学等领域的著名专家,在线性和非线性波的渐近稳定性、粘性消失极限、边界层理论、高维激波理论、松弛格式和涡点方法和高维Navier-Stokes方程等方面做出了许多原创性的实质贡献。担任MAA杂志主编,M2AS和JMP的副主编,也是M3AS、中国科学等十多个杂志的编委所获荣誉包括:Sloan研究Fellow(1991),Presidential Fellow(1993),国际数学家大会45分钟邀请报告人(2002),晨兴数学金奖获得者(2004)等。