报告主题：一阶拟线性双曲系统的局部和整体抛物极限
报告人：彭跃军 教授 （Université Clermont Auvergne / CNRS）
报告时间：2018年6月3日（周日）9:00
报告地点：校本部E408
邀请人：盛万成
主办部门：太阳成集团tyc33455数学系
报告摘要：Consider the Cauchy problem for a multidimensional first-order quasilinear hyperbolic system with a relaxation term of and a parameter standing often for the relaxation time. This kind of systems include a large number of physical models such as the Euler equations with damping, the Euler-Maxwell system for plasma and the M1-model in the radiative transfer theory etc. We are interested in the relaxation limit of the system as the relaxation time tends to zero. I will describe the formal derivation of parabolic equations from the system in a slow time scaling. Under stability conditions, the justification of the limit is shown for smooth solutions, locally in a uniform time interval and globally in time when initial data are close to constant equilibrium states.
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