报告人:彭跃军,南京航空航天大学数学学院教授、教育部长江讲席学者、博士生导师
时间:10月29日下午4:00-5:00
地点:36-507
摘要:In this talk, I consider the Cauchy problem for the isentropic Euler equations with relaxation near the isothermal regime. I present a result on the global existence of large smooth solutions when the relaxation time is sufficiently small. Under an appropriate time scaling, I establish error estimates for the convergence of the large-density solutions of the Euler equations toward the solution of the porous medium equation as the relaxation time tends to zero. A key step in proving these results is a uniform estimate of a quantity related to Darcy's law.
个人简介:彭跃军现为南京航空航天大学教授,教育部长江讲席学者,本科和硕士均毕业于复旦大学数学系,博士毕业于法国里昂第一大学,曾任同济大学助教、法国奥尔良大学和波尔多第一大学讲师、法国克莱蒙菲朗第二大学和法国克莱蒙奥佛涅大学教授。彭跃军教授长期从事非线性偏微分方程及其应用方面的研究工作,尤其对拟线性双曲型方程组、空气动力学和激波、等离子体和半导体数学模型进行了深入研究,并取得了显著的科研成果及国际学术声誉,已在Ann. Inst. H. Poincaré Anal. Non Linéaire, Communication PDE, Inverse Problems, J. Fonct. Anal., J. Math. Pures Appl.,SIAM Math. Anal. 等国际权威期刊发表了100多篇学术论文。