学 术 报 告
报告人: 谢 峰 副教授
(上海交通大学 数学系)
题 目: Global Existence of Strong Solutions to the Cauchy Problem for a 1-D Radiative Gas
地 点: 闵行校区 三教 224
时 间: 2010年4月15日(星期四)
下午:2: 00—3: 00
摘 要:We consider a one-dimensional radiation hydrodynamics model in the case of the equilibrium diffusion approximation which is described by the compressible Navier-Stokes system with the additional terms in the pressure and internal energy respectively, which embody the effect of radiation. Under the physical growth conditions on the heat conductivity, we establish the existence and uniqueness of strong solutions to the Cauchy problem with large initial data, where the initial density and velocity may have differing constant states at infinity. Moreover, we show that if there is no vacuum in the initial density, then, the vacuum and concentration of the density will never occur in any finite time.