Overhanging and touching waves in constant vorticity flows

Overhanging and touching waves in constant vorticity flows
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恒定涡流中的悬垂波和接触波

DOI:
10.1016/j.jde.2022.08.012
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发表时间:
2022
影响因子:
2.4
通讯作者:
Wheeler, Miles H.
Wheeler, Miles H.
中科院分区:
数学2区
文献类型:
--
作者:
Hur, Vera Mikyoung;Wheeler, Miles H.

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我们证明了在重力作用下,在二维、无限深、恒定涡度流的自由表面存在周期性行波,其轮廓是悬垂的,包括一个与自身相交以包围气泡的行波。长期以来,数字证据一直表明存在这种悬垂和触碰的波浪,但严格的证据一直难以捉摸。克拉珀著名的无旋流毛细波最近被证明能给出零重力条件下问题的精确解,我们的证明使用隐函数定理构造弱重力条件下的近似解。
We show the existence of periodic traveling waves at the free surface of a two dimensional, infinitely deep, and constant vorticity flow, under gravity, whose profiles are overhanging, including one which intersects itself to enclose a bubble of air. Numerical evidence has long suggested such overhanging and touching waves, but a rigorous proof has been elusive. Crapper's celebrated capillary waves in an irrotational flow have recently been shown to yield an exact solution to the problem for zero gravity, and our proof uses the implicit function theorem to construct nearby solutions for weak gravity.
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