On the Stability of Solitary Water Waves with a Point Vortex
On the Stability of Solitary Water Waves with a Point Vortex
复制标题
具有点涡的孤立水波的稳定性
DOI:
10.1002/cpa.21891
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发表时间:
2020
影响因子:
3
通讯作者:
Walsh, Samuel
中科院分区:
文献类型:
--
作者:
Varholm, Kristoffer;Wahlén, Erik;Walsh, Samuel
This paper investigates the stability of traveling wave solutions to the free boundary Euler equations with a submerged point vortex. We prove that sufficiently small‐amplitude waves with small enough vortex strength are conditionally orbitally stable. In the process of obtaining this result, we develop a quite general stability/instability theory for bound state solutions of a large class of infinite‐dimensional Hamiltonian systems in the presence of symmetry. This is in the spirit of the seminal work of Grillakis, Shatah, and Strauss (GSS) , but with hypotheses that are relaxed in a number of ways necessary for the point vortex system, and for other hydrodynamical applications more broadly. In particular, we are able to allow the Poisson map to have merely dense range, as opposed to being surjective, and to be state‐dependent.As a second application of the general theory, we consider a family of nonlinear dispersive PDEs that includes the generalized Korteweg–de Vries (KdV) and Benjamin‐Ono equations. The stability or instability of solitary waves for these systems has been studied extensively, notably by Bona, Souganidis, and Strauss , who used a modification of the GSS method. We provide a new, more direct proof of these results, as a straightforward consequence of our abstract theory. At the same time, we allow fractional dispersion and obtain a new instability result for fractional KdV. © 2020 Wiley Periodicals, Inc.
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DOI:
10.1098/rspa.1972.0074
发表时间:
1972-01-01
影响因子:
--
作者:
BENJAMIN, TB
通讯作者:
BENJAMIN, TB
影响因子:
2.4
作者:
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通讯作者:
Zeng, Chongchun
DOI:
--
发表时间:
1961
期刊:
影响因子:
--
作者:
I. Filippov
通讯作者:
I. Filippov
DOI:
10.2140/apde.2015.8.1455
发表时间:
2014-09
期刊:
arXiv: Analysis of PDEs
影响因子:
--
作者:
L. Molinet;Stéphane Vento
通讯作者:
L. Molinet;Stéphane Vento
影响因子:
1.3
作者:
Mark D. Groves;M. Groves;E. Wahlén;E. Wahlén
通讯作者:
E. Wahlén