Global solutions for the one-dimensional compressible Navier-Stokes-Smoluchowski system

Global solutions for the one-dimensional compressible Navier-Stokes-Smoluchowski system
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一维可压缩 Navier-Stokes-Smoluchowski 系统的全局解

DOI:
10.1063/1.4982360
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发表时间:
2017-05
影响因子:
1.3
通讯作者:
Li Hong
Li Hong
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhang Jianlin;Song Changming;Li Hong

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在本文中,我们考虑了一个流体-颗粒相互作用模型的粒子分散在流体中的演变。流体流动由可压缩流体的Navier-Stokes方程控制,而颗粒密度的演化由Smoluchowski方程给出。分散相和密相之间的耦合是通过流体和颗粒相互施加的拖曳力来实现的。在一维空间中,当初始数据ρ0不含真空态时,我们证明了该系统整体经典解的存在性和唯一性,弱解的存在性,以及唯一强解的存在性.
In this paper, we consider a fluid-particle interaction model for the evolution of particles dispersed in a fluid. The fluid flow is governed by the Navier-Stokes equations for a compressible fluid while the evolution of the particle densities is given by the Smoluchowski equation. The coupling between the dispersed and dense phases is obtained through the drag forces that the fluid and the particles exert mutually. We establish the existence and uniqueness of a global classical solution, the existence of weak solutions, and the existence of a unique strong solution of this system in 1D for initial data ρ0 without vacuum states.
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