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arXiv 1604.04083math.AP
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Dirichlet边界条件下三维Euler- $α$方程光滑解的一致存在时间

The uniform time of existence of the smooth solution for 3D Euler-$α$ equations with Dirichlet boundary conditions

Aibin Zang

摘要:

利用Drichlet数据在三维光滑区域上对不可压Euler- $α$方程进行了重新表述,得到了Euler- $α$方程的唯一经典解存在于与$α$无关的等时区间上.我们还证明了$α$的解在空间上一致收敛于$L^2$中相应的Euler方程的解。其次,在初值足够正则且$α$足够小的条件下,Euler- $α$方程的$H^s$ $(s>\frac{n}{2}+1)$解存在于Euler方程的最大存在区间的任意固定子区间内.

英文摘要:

After reformulate the incompressible Euler-$α$ equations in 3D smooth domain with Drichlet data, we obtain the unique classical solutions to Euler-$α$ equations exist in uniform time interval independent of $α$. We also show the solution of the Euler-$α$ converge to the corresponding solution of Euler equation in $L^2$ in space, uniformly in time. In the sequel, it follows that the $H^s$ $(s>\frac{n}{2}+1)$ solutions of Euler-$α$ equations exist in any fixed sub-interval of the maximum existent interval for the Euler equations provided that initial is regular enough and $α$ is small sufficiently.

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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