arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1708.08217math.AP
收藏

三维Prandtl方程在Gevrey函数空间中的适定性

Well-posedness in Gevrey function space for the three-dimensional Prandtl equations

Wei-Xi Li, Tong Yang

摘要:

本文研究了速度场不满足任何单调性条件的三维Prandtl方程。本文证明了当速度场的一个切向分量关于法向变量具有一条非退化临界点曲线时,系统在$]1, 2].$中具有Gevrey指标的Gevrey函数空间中是局部适定的。证明是基于除了[1,7,19]中所得到的二维情形之外,在三维空间中对相消机制的一些新的观察。22]。

英文摘要:

In the paper, we study the three-dimensional Prandtl equations without any monotonicity condition on the velocity field. We prove that when one tangential component of the velocity field has a single curve of non-degenerate critical points with respect to the normal variable, the system is locally well-posed in the Gevrey function space with Gevrey index in $]1, 2].$ The proof is based on some new observation of cancellation mechanism in the three space dimensional system in addition to those in the two-dimensional setting obtained in [1,7,19,22].

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。

↑