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arXiv 1906.01385math.AP
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关于Euler-Korteweg系统解存在的时间

On the time of existence of solutions of the Euler-Korteweg system

Corentin Audiard

摘要:

在压力自然稳定的条件下,对于小的无旋初值,Euler-Korteweg方程组的解在时间上是全局的。当初速度有一个小的旋转部分,我们得到的存在时间的下界,只依赖于旋转部分。在零涡度极限下,我们恢复了以前的整体适定性结果。独立于这种分析,我们还提供了(在特殊情况下)一个简单的例子,解决方案,在有限时间内爆炸。

英文摘要:

Under a natural stability condition on the pressure, it is known that for small irrotational initial data, the solutions of the Euler-Korteweg system are global in time. When the initial velocity has a small rotational part, we obtain a lower bound on the time of existence that depends only on the rotational part. In the zero vorticity limit we recover the previous global well-posedness result. Independently of this analysis, we also provide (in a special case) a simple example of solution that blows up in finite 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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