学术报告

Global smooth sonic-supersonic flows in a class of critical nozzles

发布人:发布时间: 2020-11-09

字体大小: 【小】 【中】 【大】

题目:Global smooth sonic-supersonic flows in a class of critical nozzles


报告人:王春朋(吉林大学)


时间:2020111314:00


地点:西大楼308

摘要:This talk concerns the global existence of smooth sonic-supersonic potential flows in a two-dimensional expanding nozzle with the critical geometry at the inlet. The flow is governed by a quasilinear non-strictly hyperbolic equation with degeneracy at the inlet. An interesting phenomena is that the existence of such sonic-supersonic flows depends on the height of the inlet. These results, together with other works, describe completely the geometry of the de Laval nozzles where there are smooth transonic flows of Meyer type whose sonic points are all exceptional.


邀请人:吕勇 老师