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arXiv 2008.00467math.AP
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全空间无压Euler-Navier-Stokes方程组的Cauchy问题

On the Cauchy problem for the pressureless Euler-Navier-Stokes system in the whole space

Young-Pil Choi, Jinwook Jung

摘要:

本文研究由无压Euler方程和不可压Navier-斯托克斯方程组成的两相流体模型的整体Cauchy问题,其中两个方程通过阻力耦合。当初始数据足够小且正则时,我们证明了该系统经典解的整体存在性和唯一性。主要的困难出现在没有压力的欧拉方程。为了解决这个问题,我们适当地结合了经典解的大时间行为和bootstrapping论证来构造全局时间唯一的经典解。

英文摘要:

In this paper, we study the global Cauchy problem for a two-phase fluid model consisting of the pressureless Euler equations and the incompressible Navier-Stokes equations where the coupling of two equations is through the drag force. We establish the global-in-time existence and uniqueness of classical solutions for that system when the initial data are sufficiently small and regular. Main difficulties arise in the absence of pressure in the Euler equations. In order to resolve it, we properly combine the large-time behavior of classical solutions and the bootstrapping argument to construct the global-in-time unique classical solutions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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