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arXiv 2402.02531math.AP
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含真空的两相流模型经典解的不存在性

Non-existence of classical solutions to a two-phase flow model with vacuum

Hai-Liang Li, Yuexun Wang, Yue Zhang

AI总结:

本文研究无压 Euler 方程与等熵可压缩 Navier-Stokes 方程通过阻力项耦合的两相流模型,在密度含真空且粘性依赖密度的条件下,证明了有限能量经典解在任何小时间内均不存在。

摘要:

本文研究一个两相流模型经典解的适定性,该模型由无压 Euler 方程通过阻力强迫项与等熵可压缩 Navier-Stokes 方程耦合而成。我们考虑流体密度可能包含真空、且粘性为依赖于密度的函数的情形。在适当的初值假设下,我们证明该耦合系统 Cauchy 问题的有限能量(即在非齐次 Sobolev 空间中)经典解在任何小时间内都不存在。

英文摘要:

In this paper, we study the well-posedness of classical solutions to a two-phase flow model consisting of the pressureless Euler equations coupled with the isentropic compressible Navier-Stokes equations via a drag forcing term. We consider the case that the fluid densities may contain a vacuum, and the viscosities are density-dependent functions. Under suitable assumptions on the initial data, we show that the finite-energy (i.e., in the inhomogeneous Sobolev space) classical solutions to the Cauchy problem of this coupled system do not exist for any small time.

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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