arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2103.14451math.APmath-phmath.MP
收藏

有限水深上极端形式波浪波峰附近的渐近性态

An asymptotic behaviour near the crest of waves of extreme form on water of finite depth

Vladimir Kozlov, Evgeniy Lokharu

摘要:

我们证明了局部高阶渐近的极端水波涡附近的驻点。我们得到的解的行为和它们的正则性实质上取决于涡度。特别是,我们表明,极端波与负涡度分布有凹的波峰附近的配置文件。我们的方法是基于新的正则性结果和相应的非线性问题的半带的渐近分析。我们的主要结果是本地的,因此是有效的广泛的问题,如波与分段恒定涡,分层波,逆流或波在无限深的流动。

英文摘要:

We prove local higher-order asymptotics for extreme water waves with vorticity near stagnation points. We obtain that the behaviour of solutions and their regularity depend substantially on the vorticity. In particular, we show that extreme waves with a negative vorticity distribution have concave profiles near the crest. Our approach is based on new regularity results and asymptotic analysis of the corresponding nonlinear problem in a half-strip. Our main result is local and therefore is valid for a broad range of problems, such as for waves with a piecewise constant vorticity, stratified waves, flows with counter-currents or waves on infinite depth.

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。

↑