中科院数学与系统科学研究院
数学研究所
偏微分方程研讨班
报告人：罗 涛 教授 (香港城市大学)
题 目：Large Time Asymptotics of Vacuum Boundaries of Viscous Gaseous Stars
时 间：2020.12.02（星期三）, 14:00-15:00
地 点：腾讯会议 ID: 941 114 913
摘 要：The large time asymptotics of vacuum boundaries featuring the physical singularity with radial symmetry for viscous gaseous stars will be discussed in this talk, based on joint research with Zhouping Xin and Huihui Zeng.
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报告人：曾惠慧 教授 (清华大学)
题 目：Physical Vacuum Singularity of Compressible Euler Equations with Damping in 3-D
时 间：2020.12.02（星期三）, 15:00-16:00
地 点：腾讯会议 ID: 941 114 913
摘 要：For vacuum free boundary problems of compressible fluids, the physical vacuum singularity of the sound speed being of ？ Holder but not Lipshitzian continuous near vacuum states as a characteristic phenomenon appearing in some important physical situations, such as gaseous stars, compressible flows with damping and shallow waters. The physical singularity near vacuum states prevents the standard method of symmetric systems developed by Friedrichs-Lax-Kato-Kreiss from applying. In this talk, I will discuss the almost global solutions to the vacuum free boundary problems with the physical vacuum singularity of compressible Euler equations with damping in the 3-D case.
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报告人： 王 涛 讲师 (武汉大学)
题 目：Free Boundary Problem in Ideal Compressible Magnetohydrodynamics
时 间：2020.12.02（星期三）, 16:00-17:00
地 点：腾讯会议 ID: 941 114 913
摘 要：In this talk, we present the joint work with Professor Yuri Trakhinin on the local well-posedness of the free boundary problem in ideal compressible magnetohydrodynamics with the total pressure vanishing on the plasma–vacuum interface.
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