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Long waves in shallow water propagating over a background shear flow towards a sloping beach are being investigated. The classical shallow-water equations are extended to incorporate both a background shear flow and a linear beach profile,…

流体动力学 · 物理学 2017-08-02 Maria Bjørnestad , Henrik Kalisch

This is the first of two articles on the study of a particle system model that exhibits a Turing instability type effect. The model is based on two discrete lines (or toruses) with Ising spins, that evolve according to a continuous time…

概率论 · 数学 2017-07-19 Monia Capanna , Nahuel Soprano-Loto

This Ph.D. thesis reports on progress in rigorously establishing hydrodynamic principles from the microscopic Hamiltonian dynamics of quantum many-body systems in a general, non-model-specific manner. Using the C*-algebra framework of…

数学物理 · 物理学 2026-01-14 Dimitrios Ampelogiannis

This paper studies global existence, hydrodynamic limit, and large-time behavior of weak solutions to a kinetic flocking model coupled to the incompressible Navier-Stokes equations. The model describes the motion of particles immersed in a…

偏微分方程分析 · 数学 2013-11-25 J. A. Carrillo , Y. -P. Choi , T. K. Karper

Coastal erosion is a major and growing environmental problem describing the movement of sand caused by tides, waves or currents. Several phenomena contribute to the significant advance of the sea. These include climate change, with rising…

数值分析 · 数学 2023-11-16 Mame Gor Ngom , Ibrahima Faye , Diaraf Seck

Hydrodynamic systems arising in swarming modelling include nonlocal forces in the form of attractive-repulsive potentials as well as pressure terms modelling strong local repulsion. We focus on the case where there is a balance between…

偏微分方程分析 · 数学 2018-03-12 José A. Carrillo , Aneta Wróblewska-Kamińska , Ewelina Zatorska

We rigorously justify in 3D the main asymptotic models used in coastal oceanography, including: shallow-water equations, Boussinesq systems, Kadomtsev-Petviashvili (KP) approximation, Green-Naghdi equations, Serre approximation and…

偏微分方程分析 · 数学 2016-03-08 Borys Alvarez-Samaniego , David Lannes

This article analyzes the formulation of space-time continuous hyperbolic hydrodynamic models for systems of interacting particles moving on a lattice, by connecting their local stochastic lattice dynamics to the formulation of an…

统计力学 · 物理学 2018-06-11 Massimiliano Giona

We prove the existence of large-data global-in-time weak solutions to an evolutionary PDE system describing flows of incompressible \emph{heat-conducting} viscoelastic rate-type fluids with stress-diffusion, subject to a stick-slip boundary…

偏微分方程分析 · 数学 2020-07-14 Miroslav Bulíček , Josef Málek , Vít Průša , Endre Süli

We study the behavior of shallow water waves over periodically-varying bathymetry, based on the first-order hyperbolic Saint-Venant equations. Although solutions of this system are known to generally exhibit wave breaking, numerical…

偏微分方程分析 · 数学 2025-02-06 David I. Ketcheson , Lajos Lóczi , Giovanni Russo

We describe traveling waves in a basic model for three-dimensional water-wave dynamics in the weakly nonlinear long-wave regime. Small solutions that are periodic in the direction of translation (or orthogonal to it) form an…

斑图形成与孤子 · 物理学 2015-06-26 Robert L. Pego , Jose Raul Quintero

In this paper we build models for short-term, mean-term and long-term dynamics of dune and megariple morphodynamics. They are models that are degenerated parabolic equations which are, moreover, singularly perturbed. We, then give an…

偏微分方程分析 · 数学 2010-11-24 Ibrahima Faye , Emmanuel Frenod , Diaraf Seck

We show that weak convergence of point measures and $(2+\epsilon)$-moment conditions imply hydrodynamic equations at the limit of infinitely many interacting molecules. The conditions are satisfied whenever the solutions of the classical…

数学物理 · 物理学 2016-09-30 Stamatis Dostoglou , Nicholas Jacob , Jianfei Xue

The classical system of shallow-water (Saint--Venant) equations describes long surface waves in an inviscid incompressible fluid of a variable depth. Although shock waves are expected in this quasilinear hyperbolic system for a wide class…

偏微分方程分析 · 数学 2016-03-16 Sergey N. Alexeenko , Marina V. Dontsova , Dmitry E. Pelinovsky

In this paper, we study a hydrodynamic phase-field system modeling the deformation of functionalized membranes in incompressible viscous fluids. The governing PDE system consists of the Navier-Stokes equations coupled with a convective…

偏微分方程分析 · 数学 2022-06-22 Hao Wu , Yuchen Yang

Many hydrodynamic instability patterns can be put into correspondence with a subset of characteristic surfaces of tangential discontinuities. These topological limits sets to systems of hyperbolic PDE's are locally unstable, but a certain…

流体动力学 · 物理学 2007-05-23 R. M. Kiehn

Under the action of a time-periodic external forces we prove the existence of at least one time-periodic weak solution for the interaction between a three-dimensional incompressible fluid, governed by the Navier- Stokes equation and a two…

偏微分方程分析 · 数学 2022-04-08 Claudiu Mîndrilă , Sebastian Schwarzacher

The investigation of the coupled atmosphere-ocean system is not only scientifically challenging but also practically important. We consider a coupled atmosphere-ocean model, which involves hydrodynamics, thermodynamics, and random…

动力系统 · 数学 2007-05-23 J. Duan , H. Gao , B. Schmalfuss

We study the so-called homogeneous model of wind-driven ocean circulation, also known as the single-layer quasigeostrophic model. Our attention focuses on performing a complete asymptotic analysis that highlights boundary layer formation…

偏微分方程分析 · 数学 2021-08-06 Gabriela López Ruiz

We derive the Hydrodynamics for a system of N active, spherical, underdamped particles, interacting through conservative forces. At the microscopic level, we represent the evolution of the particles in terms of the Kramers equation for the…

统计力学 · 物理学 2022-03-15 Umberto Marini Bettolo Marconi , Andrea Puglisi , Lorenzo Caprini
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