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Two-dimensional nonlinear gravity waves travelling in shallow water on a vertically sheared current of constant vorticity are considered. Using Euler equations, in the shallow water approximation, hyperbolic equations for the surface…

流体动力学 · 物理学 2018-07-04 Christian Kharif , Malek Abid

We study the paraxial wave equation with a randomly perturbed index of refraction, which can model the propagation of a wave beam in a turbulent medium. The random perturbation is a stationary and isotropic process with a general form of…

偏微分方程分析 · 数学 2022-05-10 Liliana Borcea , Josselin Garnier , Knut Solna

This paper concerns wave propagation in a class of scalar reaction-diffusion-convection equations with $p$-Laplacian-type diffusion and monostable reaction. We introduce a new concept of a non-smooth traveling wave profile, which allows us…

偏微分方程分析 · 数学 2026-01-21 Pavel Drábek , Soyeun Jung , Eunkyung Ko , Michaela Zahradníková

We investigate the interaction of waves with surface flows by considering the full set of conserved quantities, subtle but important surface elevation changes induced by wave packets and by directly considering the necessary forces to…

大气与海洋物理 · 物理学 2014-08-26 Clifford Chafin

We study nonlinear wave equations perturbed by transport noise acting either on the displacement or on the velocity. Such noise models random advection and, under suitable scaling of space covariance, may generate an effective dissipative…

概率论 · 数学 2026-01-07 Chang Liu , Dejun Luo

In current scientific and technological scenario, studies of transmittance of surface waves across structured interfaces have gained some wind amidst applications to metasurfaces, electronic edge-waves, crystal grain boundaries, etc. The…

经典物理 · 物理学 2023-09-18 Basant Lal Sharma

Oceanic waves registered by satellite observations often have curvilinear fronts and propagate over various currents. In this paper, we study long linear and weakly-nonlinear ring waves in a stratified fluid in the presence of a…

流体动力学 · 物理学 2016-04-12 K. R. Khusnutdinova , X. Zhang

In this short note, we derive a system of two nonlocal equations for the water-wave problem following the work of [AFM06]. Specifically, we consider a fluid with a one-dimensional free surface for an irrotational fluid both with, and…

流体动力学 · 物理学 2020-08-04 KL Oliveras

This paper considers two-dimensional stratified water waves propagating under the force of gravity over an impermeable flat bed and with a free surface. We prove the existence of a global continuum of classical solutions that are periodic…

偏微分方程分析 · 数学 2009-02-11 Samuel Walsh

This paper concerns the derivation of radiative transfer equations for acoustic waves propagating in a randomly fluctuating half-space in the weak-scattering regime, and the study of boundary effects through an asymptotic analysis of the…

经典物理 · 物理学 2022-12-01 Adel Messaoudi , Regis Cottereau , Christophe Gomez

Correct prediction of particle transport by surface waves is crucial in many practical applications such as search and rescue or salvage operations and pollution tracking and clean-up efforts. Recent results have indicated transport by…

流体动力学 · 物理学 2023-01-26 D. Eeltink , R. Calvert , J. E. Swagemakers , Qian Xiao , T. S. van den Bremer

We consider a system of two reaction-diffusion-advection equations describing the one dimensional directed motion of particles with superimposed diffusion and mutual alignment. For this system we show the existence of traveling wave…

偏微分方程分析 · 数学 2021-01-19 Heinrich Freistühler , Jan Fuhrmann

This paper extends current knowledge on electromagnetic wave scattering from bounded moving media in several regards. First, it complements the usual dispersion relation of moving media, $\omega(\theta_\mathbf{k})$ ($\theta_\mathbf{k}$:…

光学 · 物理学 2021-05-04 Zoé-Lise Deck-Léger , Xuezhi Zheng , Christophe Caloz

The spreading of a cap-shaped spherical droplet of non-Newtonian power-law liquids on a completely wettable spherical substrate is theoretically studied. Both convex spherical substrates and concave spherical cavities with smooth or rough…

软凝聚态物质 · 物理学 2018-12-18 Masao Iwamatsu

We present a mathematical theory of time-harmonic wave propagation and reflection in a two-dimensional random acoustic waveguide with sound soft boundary and turning points. The boundary has small fluctuations on the scale of the…

偏微分方程分析 · 数学 2017-02-14 Liliana Borcea , Josselin Garnier , Derek Wood

Lubrication equations for a surfactant-driven flow of a thin layer of fluid are considered with a singular surfactant-dependent surface tension. It is shown that there exists a bounded traveling wave solution which connects a fully…

偏微分方程分析 · 数学 2014-01-15 Joachim Escher , Matthieu Hillairet , Philippe Laurencot , Christoph Walker

Heterogeneity can be accounted for by a random potential in the wave equation. For acoustic waves in a fluid with fluctuations of both density and compressibility (as well as for electromagnetic waves in a medium with fluctuation of both…

经典物理 · 物理学 2016-12-07 Ibrahim Baydoun , Diego Baresch , Romain Pierrat , Arnaud Derode

This article is devoted to the study of local well-posedness for deep water waves with constant vorticity in two space dimensions on the real line. The water waves can be paralinearized and written as a quasilinear dispersive system of…

偏微分方程分析 · 数学 2024-10-16 Lizhe Wan

Graphene has opened new avenues of research in quantum transport, with potential applications for coherent electronics. Coherent transport depends sensitively on scattering from microscopic disorder present in graphene samples: electron…

介观与纳米尺度物理 · 物理学 2015-05-18 Jesse Berezovsky , Robert M Westervelt

A diffusion process for charge distributions in a phase space is examined. The corresponding charge moves in a force field and under an action of a random field. There are the diffusion motions for coordinates and for momenta. In our model,…

数学物理 · 物理学 2008-03-19 E. M. Beniaminov