报告题目:Exponential Decay for Lions-Feireisl's Weak Solutions to the Barotropic Compressible Navier-Stokes Equations in 3D Bounded Domains
主 讲 人:施 小 丁
单 位:北京化工大学
时 间:4月20日17:10
地 点:公司一楼报告厅
摘 要:
In this talk, we will consider the barotropic compressible Navier-Stokes equations in three-dimensional (3D) bounded domains, we prove that any finite energy weak solution obtained by Lions [Mathematical topics in fluid mechanics, Vol. 2. Compressible models(1998)] and Feireisl-Novotny-Petzeltova [J. Math. Fluid Mech. 3(2001), 358-392] decays exponentially to the equilibrium state. This result is established by both using the extra integrability of the density due to Lions and constructing a suitable Lyapunov functional just under the framework of Lions-Feireisl's weak solutions.
简 介:
施小丁,北京化工大学教授,1996年博士毕业于中国科学院数学与系统科学研究院。主要研究领域为流体力学方程组的相关问题,包括可压缩Navier-Stokes方程组的各种波的叠加、碰撞等大时间行为;非牛顿不可压缩Navier-Stokes方程组固液耦合问题和混合边值问题解的适定性及数值分析;非混相两相流方程组的解的适定性、大时间行为以及奇异极限问题等。部分成果发表在数学领域的重要杂志Comm. Math. Phys., Indiana Univ. Math. J., SIAM J. Math. Anal., Nonlinearity,J. Differential Equations等,多次主持及参与国家自然科学基金项目。