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arXiv 1004.4749math-phmath.MP
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三维等熵可压缩纳维-斯托克斯方程大振动和真空经典解的整体适定性

Global Well-Posedness of Classical Solutions with Large Oscillations and Vacuum to the Three-Dimensional Isentropic Compressible Navier-Stokes Equations

Xiangdi Huang, Jing Li, Zhouping Xin

摘要:

本文研究了三维空间等熵可压缩纳维-斯托克斯方程Cauchy问题的整体经典解的存在唯一性,其初值是光滑的,且在远场(真空或非真空)具有小的能量,但可能有大的振荡.初始密度可以为零,真空集的空间测度可以任意大,特别是初始密度甚至可以有紧支集。这些结果推广了先前关于初始密度严格远离真空的经典解的结果,并且是第一个关于可能具有大振荡且可能包含真空态的整体经典解的结果。

英文摘要:

We establish the global existence and uniqueness of classical solutions to the Cauchy problem for the isentropic compressible Navier-Stokes equations in three spatial dimensions with smooth initial data which are of small energy but possibly large oscillations with constant state as far field which could be either vacuum or non-vacuum. The initial density is allowed to vanish and the spatial measure of the set of vacuum can be arbitrarily large, in particular, the initial density can even have compact support. These results generalize previous results on classical solutions for initial densities being strictly away from vacuum, and are the first for global classical solutions which may have large oscillations and can contain vacuum states.

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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