主讲人：黄飞敏 教授（中科院）

时  间： 3月22日（周二）16：30-17：30

地  点：数学科学学院 412教室

备  注：Abstract: In this paper, a compensated compactness framework is established for sonic-subsonic approximate solutions to the n-dimensional($n\ge 2$) Euler equations for steady irrotational flow that may contain stagnation points. This compactness framework holds provided that the approximate solutions are uniformly bounded and satisfy ­$H^{-1}_{loc}$ compactness conditions. As illustration, we show the existence of sonic-subsonic weak solution to n-dimensional($n\ge 2$) Euler equations for steady irrotational flow past obstacles or through an infinitely long nozzle. This is the first result concerning the sonic-subsonic limit for n-dimension($n\ge 3$).