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Recently, the Whitham and capillary-Whitham equations were shown to accurately model the evolution of surface waves on shallow water. In order to gain a deeper understanding of these equations, we compute periodic, traveling-wave solutions…

流体动力学 · 物理学 2019-02-01 John D. Carter , Morgan Rozman

We construct small-amplitude periodic water waves with multiple critical layers. In addition to waves with arbitrarily many critical layers and a single crest in each period, two-dimensional sets of waves with several crests and troughs in…

偏微分方程分析 · 数学 2011-04-04 Mats Ehrnström , Joachim Escher , Erik Wahlén

We prove the existence of periodic travelling wave solutions for general discrete nonlinear Klein-Gordon systems, considering both cases of hard and soft on-site potentials. In the case of hard on-site potentials we implement a fixed point…

偏微分方程分析 · 数学 2023-07-21 Dirk Hennig , Nikos I. Karachalios

We numerically investigate the flow structure of periodic steady water waves of fixed relative mass flux propagating on rotational flows with piece-wise constant vorticity. We show that for wave solutions along the global bifurcation…

流体动力学 · 物理学 2020-11-25 Lin Chen , Biswajit Basu , Calin-I Martin

This article is concerned with the incompressible, infinite depth water wave equation in two space dimensions, with gravity and constant vorticity but with no surface tension. We consider this problem expressed in position-velocity…

偏微分方程分析 · 数学 2018-10-31 Mihaela Ifrim , Daniel Tataru

We study capillary-gravity surface waves for fluid flows governed by Darcy's law. This includes flows in vertical Hele-Shaw cells and in porous media (the one-phase Muskat problem) with finite or infinite depth. The free boundary is acted…

偏微分方程分析 · 数学 2026-02-20 Huy Q. Nguyen

We study travelling waves on a two--dimensional lattice with linear and nonlinear coupling between nearest particles and a periodic nonlinear substrate potential. Such a discrete system can model molecules adsorbed on a substrate crystal…

斑图形成与孤子 · 物理学 2007-05-23 Michal Feckan , Vassilis M. Rothos

We study steady axisymmetric water waves with general vorticity and swirl, subject to the influence of surface tension. Explicit solutions to such a water wave problem are static configurations where the surface is an unduloid, that is, a…

偏微分方程分析 · 数学 2024-08-27 Anna-Mariya Otsetova , Erik Wahlén , Jörg Weber

The existence of traveling and standing waves is investigated for chains of coupled pendula with periodic boundary conditions. The results are proven by applying topological methods to subspaces of symmetric solutions. The main advantage of…

动力系统 · 数学 2016-07-27 Carlos García-Azpeitia

In this paper, we study the traveling wave solutions to the density-suppressed motility model describing the ``self-trapping'' mechanism that induces spatio-temporal pattern formations observed in the experiment. We establish the existence…

偏微分方程分析 · 数学 2020-06-24 Jing Li , Zhi-An Wang

In this paper, we establish the existence of Stokes waves with piecewise smooth vorticity in a two-dimensional, infinitely deep fluid domain. These waves represent traveling water waves propagating over sheared currents in a semi-infinite…

偏微分方程分析 · 数学 2025-11-07 Changfeng Gui , Jun Wang , Wen Yang , Yong Zhang

This article is concerned with the incompressible, irrotational infinite depth water wave equation in two space dimensions, without gravity but with surface tension. We consider this problem expressed in position-velocity potential…

偏微分方程分析 · 数学 2017-04-17 Mihaela Ifrim , Daniel Tataru

We adopt a robust numerical continuation scheme to examine the global bifurcation of periodic traveling waves of the capillary-gravity Whitham equation, which combines the dispersion in the linear theory of capillary-gravity waves and a…

流体动力学 · 物理学 2021-08-27 Efstathios G. Charalampidis , Vera Mikyoung Hur

We prove the existence of small amplitude time quasi-periodic solutions of the pure gravity water waves equations with constant vorticity, for a bidimensional fluid over a flat bottom delimited by a space periodic free interface. Using a…

偏微分方程分析 · 数学 2021-03-02 Massimiliano Berti , Luca Franzoi , Alberto Maspero

The classical irrotational capillary-gravity water wave problem described by the Euler equations with a nonlinear free surface boundary condition over a flat bed is considered. A modified flow force has been defined and a new formulation of…

偏微分方程分析 · 数学 2020-10-20 Biswajit Basu , Calin Iulian Martin

We study theoretically the capillary-gravity waves created at the water-air interface by a small two-dimensional perturbation when a depth-dependent current is initially present in the fluid. Assuming linear wave theory, we derive a general…

软凝聚态物质 · 物理学 2015-05-28 Michael Benzaquen , Elie Raphael

This paper focuses on the analysis of stratified steady periodic water waves that contain stagnation points. The initial step involves transforming the free-boundary problem into a quasilinear pseudodifferential equation through a conformal…

偏微分方程分析 · 数学 2024-04-08 Wang Jun , Xu Fei , Zhang Yong

For two-dimensional steady pure-gravity water waves with a unidirectional flow of constant favourable vorticity, we prove an explicit bound on the amplitude of the wave, which decays to zero as the vorticity tends to infinity. Notably, our…

偏微分方程分析 · 数学 2023-06-14 Evgeniy Lokharu , Erik Wahlén , Jörg Weber

We prove the existence of multi-soliton and kink-multi-soliton solutions of the Euler-Korteweg system in dimension one. Such solutions behaves asymptotically in time like several traveling waves far away from each other. A kink is a…

偏微分方程分析 · 数学 2018-09-06 Corentin Audiard

We study surface gravity waves for viscous fluid flows governed by Darcy's law. The free boundary is acted upon by an external pressure posited to be in traveling wave form with a periodic profile. It has been proven that for any given…

偏微分方程分析 · 数学 2023-12-13 John Brownfield , Huy Q. Nguyen