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arXiv 2401.04888math.AP
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关于二维 Kuramoto-Sivashinsky 方程中大规模增长稳定化的注记

Remarks on the stabilization of large-scale growth in the 2D Kuramoto-Sivashinsky equation

Adam Larios, Vincent R. Martinez

AI总结:

本文通过观察二维无旋 Burgers 方程中散度场的关键作用,提出基于散度的新正则性条件,并将其与 Ladyzhenskaya-Prodi-Serrin 型准则建立联系,进而用于证明修正 KSE 及二维 Burgers-Sivashinsky 方程的全局正则性。

摘要:

本文对二维无旋 Burgers 方程解的行为作了一些初步观察,这些观察表明标量散度场在决定解的动力学中起着独特的作用。这些观察启发了一种新的基于散度的二维 Kuramoto-Sivashinsky 方程(KSE)正则性条件,为该系统中潜在爆破机制的本质提供了概念上的清晰性。本文还建立了该正则性准则与 KSE 的 Ladyzhenskaya-Prodi-Serrin 型准则之间的关系,从而为仅基于解的低模态行为发展该方程的另一种正则性准则框架奠定了基础。文章最后应用这些思想,确定了对 KSE 的一个概念上简单的修正,该修正可产生全局正则解,并直接验证了这一正则性准则,从而建立了二维 Burgers-Sivashinsky 方程解的全局正则性。证明是直接的、初等的且简洁的。

英文摘要:

In this article, some elementary observations are made regarding the behavior of solutions to the two-dimensional curl-free Burgers equation which suggest the distinguished role played by the scalar divergence field in determining the dynamics of the solution. These observations inspire a new divergence-based regularity condition for the two-dimensional Kuramoto-Sivashinsky equation (KSE) that provides conceptual clarity to the nature of the potential blow-up mechanism for this system. The relation of this regularity criterion to the Ladyzhenskaya-Prodi-Serrin-type criterion for the KSE is also established, thus providing the basis for the development of an alternative framework of regularity criterion for this equation based solely on the low-mode behavior of its solutions. The article concludes by applying these ideas to identify a conceptually simple modification of KSE that yields globally regular solutions, as well as providing a straightforward verification of this regularity criterion to establish global regularity of solutions to the 2D Burgers-Sivashinsky equation. The proofs are direct, elementary, and concise.

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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