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arXiv 2306.06641math.AP
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$α$-Euler方程的涡量强收敛性与能量守恒

Strong convergence of the vorticity and conservation of the energy for the $α$-Euler equations

Stefano Abbate, Gianluca Crippa, Stefano Spirito

AI总结:

该研究针对二维环面上的$α$-Euler方程,证明了其涡量解在$L^\infty_tL^p_x$空间中强收敛于Euler方程的拉格朗日能量守恒解,并得到了有界初始涡量下$L^p$空间的定量收敛速率。

摘要:

本文研究二维环面上$α$-Euler方程的解向Euler方程解的收敛性。具体而言,给定初始涡量$ω_0$属于$L^p_x$(其中$p \in (1,\infty)$),我们证明了$α$-Euler方程的涡量解$q^α$在$L^\infty_tL^p_x$空间中强收敛于Euler方程的一个拉格朗日且能量守恒的解。此外,若考虑初始涡量有界的解,我们证明了$q^α$在$L^p$空间中($p \in (1, \infty)$)收敛到$ω$的定量收敛速率。

英文摘要:

In this paper, we study the convergence of solutions of the $α$-Euler equations to solutions of the Euler equations on the $2$-dimensional torus. In particular, given an initial vorticity $ω_0$ in $L^p_x$ for $p \in (1,\infty)$, we prove strong convergence in $L^\infty_tL^p_x$ of the vorticities $q^α$, solutions of the $α$-Euler equations, towards a Lagrangian and energy-conserving solution of the Euler equations. Furthermore, if we consider solutions with bounded initial vorticity, we prove a quantitative rate of convergence of $q^α$ to $ω$ in $L^p$, for $p \in (1, \infty)$.

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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