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arXiv 2009.07259math.APmath-phmath.MP
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流形上二维Navier-Stokes方程全局正则性的几何捕获方法

A geometric trapping approach to global regularity for 2D Navier-Stokes on manifolds

Aynur Bulut, Khang Manh Huynh

AI总结:

针对无边界二维黎曼流形上Navier-Stokes方程的全局存在性与正则性问题,受Mattingly和Sinai的平坦周期边界方法启发,结合频率投影、多线性估计与微局部分析思想,利用频率分解技术给出了直接证明。

摘要:

本文利用频率分解技术,直接证明了无边界二维黎曼流形上Navier-Stokes方程的全局存在性与正则性。我们的技术受Mattingly和Sinai[15]的方法启发,该方法是在平坦背景的周期边界条件下提出的,基于傅里叶系数的最大值原理。\n 推广到一般流形需要若干新思想,这与我们研究场景中较差的谱局域化性质相关。我们的论证运用了频率投影算子、源自非线性薛定谔方程研究的多线性估计,以及微局部分析的思想。

英文摘要:

In this paper, we use frequency decomposition techniques to give a direct proof of global existence and regularity for the Navier-Stokes equations on two-dimensional Riemannian manifolds without boundary. Our techniques are inspired by an approach of Mattingly and Sinai [15] which was developed in the context of periodic boundary conditions on a flat background, and which is based on a maximum principle for Fourier coefficients. The extension to general manifolds requires several new ideas, connected to the less favorable spectral localization properties in our setting. Our arguments make use of frequency projection operators, multilinear estimates that originated in the study of the non-linear Schrödinger equation, and ideas from microlocal analysis.

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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