On formation of singularity for non-isentropic Navier-Stokes equations without heat-conductivity

On formation of singularity for non-isentropic Navier-Stokes equations without heat-conductivity
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无导热性非等熵纳维-斯托克斯方程奇点的形成

DOI:
10.3934/dcds.2016.36.4477
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发表时间:
2015-01
期刊:
Discrete and Continuous Dynamical Systems. Series A
影响因子:
--
通讯作者:
Xin Zhouping
Xin Zhouping
中科院分区:
其他
文献类型:
--
作者:
Huang Xiangdi;Xin Zhouping

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在真空条件下,不含导热系数的非等熵N-S方程的光滑解在有限时间内会失去其正则性。然而,尽管最近对这种井喷现象的研究取得了进展,但仍然没有给出可能的井喷机制。在这篇文章中,我们给出了一个简单的连续原理,它认为对于一大类光滑的初始数据,密度或温度的集中发生在有限时间内,这是导致经典解破裂的原因。它还肯定地回答了J·纳什在20世纪50年代提出一个强版本的猜想
It is known that smooth solutions to the non-isentropic Navier-Stokes equations without heat-conductivity may lose their regularities in finite time in the presence of vacuum. However, in spite of the recent progress on such blowup phenomenon, it remain to give a possible blowup mechanism. In this paper, we present a simple continuation principle for such system, which asserts that the concentration of the density or the temperature occurs in finite time for a large class of smooth initial data, which is responsible for the breakdown of classical solutions. It also give an affirmative answer to a strong version of conjecture proposed by J.Nash in 1950s
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