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Consideration is given to three different full dispersion Boussinesq systems arising as asymptotic models in the bi-directional propagation of weakly nonlinear surface waves in shallow water. We prove that, under a non-cavitation condition…

偏微分方程分析 · 数学 2022-03-28 Martin Oen Paulsen

We present a fully discrete stability analysis of the domain-of-dependence stabilization for hyperbolic problems. The method aims to address issues caused by small cut cells by redistributing mass around the neighborhood of a small cut cell…

数值分析 · 数学 2026-05-07 Louis Petri , Gunnar Birke , Christian Engwer , Hendrik Ranocha

Proving the uniqueness of solutions to multi-species cross-diffusion systems is a difficult task in the general case, and there exist very few results in this direction. In this work, we study a particular system with zero-flux boundary…

偏微分方程分析 · 数学 2019-07-25 Judith Berendsen , Martin Burger , Virginie Ehrlacher , Jan-Frederik Pietschmann

The asymptotics of the strongly stratified Boussinesq system when the Froude number goes to zero have been previously investigated, but the resulting limit system surprisingly did not depend on the thermal diffusivity $\nu$ ' . In this…

偏微分方程分析 · 数学 2024-07-16 Frédéric Charve

Travelling and rotating waves are ubiquitous phenomena observed in time dependent PDEs modelling the combined effect of dissipation and non-linear interaction. From an abstract viewpoint they appear as relative equilibria of an equivariant…

数值分析 · 数学 2018-10-30 Wolf-Jürgen Beyn , Denny Otten

We study the existence and the rate of equilibration of weak solutions to a two-component system of non-linear diffusion-aggregation equations, with small cross diffusion effects. The aggregation term is assumed to be purely attractive, and…

偏微分方程分析 · 数学 2024-06-17 Daniel Matthes , Christian Parsch

We consider the 2D Boussinesq equations with a velocity damping term in a strip $\mathbb{T}\times[-1,1]$, with impermeable walls. In this physical scenario, where the \textit{Boussinesq approximation} is accurate when density/temperature…

偏微分方程分析 · 数学 2018-10-02 Angel Castro , Diego Córdoba , Daniel Lear

We give sufficient conditions such that the exponential stability of the linearization of a non-linear system implies that the non-linear system is (locally) exponentially stable. One of these conditions is that the non-linear system is…

泛函分析 · 数学 2014-04-15 Hans Zwart

Planar wave trains are traveling wave solutions whose wave profiles are periodic in one spatial direction and constant in the transverse direction. In this paper, we investigate the stability of planar wave trains in reaction-diffusion…

偏微分方程分析 · 数学 2021-01-14 Björn de Rijk , Björn Sandstede

Using the asymptotic Bethe Ansatz, we study the stabilization problem of the one-dimensional spin-polarized Fermi gas confined in a hard-wall potential with tunable p-wave scattering length and finite effective range. We find that the…

量子气体 · 物理学 2018-08-08 Lei Pan , Shu Chen , Xiaoling Cui

We obtain free of resonances regions for the elasticity system in the exterior of a strictly convex body with dissipative boundary conditions under some natural assumptions on the behaviour of the geodesics on the boundary.

偏微分方程分析 · 数学 2007-06-21 Moez Khenissi , Georgi Vodev

We study convective stability of a two-front superposition in a reaction-diffusion system. Due to the instability of the connecting equilibrium, long-range semi-strong interaction is expected between the two waves. When restricting to the…

偏微分方程分析 · 数学 2026-05-27 Louis Garénaux , Bastian Hilder

We propose a quantitative direct method to prove the local stability of a stationary solution for a rough differential equation and its regular discretization scheme. Using Doss-Sussmann technique and stopping time analysis, we provide…

动力系统 · 数学 2025-09-24 Luu Hoang Duc , Phan Thanh Hong , Nguyen Dinh Cong

This work's major intention is the investigation of the well-posedness of certain cross-diffusion equations in the class of bounded functions. More precisely, we show existence, uniqueness and stability of bounded weak solutions under the…

偏微分方程分析 · 数学 2020-11-19 Christian Seis , Dominik Winkler

This paper studies the stability of weak dispersive shock profiles for a quantum hydrodynamics system in one space dimension with nonlinear viscosity and dispersive (quantum) effects due to a Bohm potential. It is shown that, if the shock…

偏微分方程分析 · 数学 2023-03-10 Raffaele Folino , Ramón G. Plaza , Delyan Zhelyazov

In this paper, we address the stability of transport systems and wave propagation on networks with time-varying parameters. We do so by reformulating these systems as non-autonomous difference equations and by providing a suitable…

偏微分方程分析 · 数学 2016-11-07 Yacine Chitour , Guilherme Mazanti , Mario Sigalotti

In this work, a novel Boussinesq system is put forward. The system is naturally nonlinearly entropy/energy-stable, and is designed for problems with sharply varying bathymetric features. The system is flexible and allows tuning of the…

数值分析 · 数学 2023-02-21 Magnus Svärd , Henrik Kalisch

We consider a rate-independent system with nonconvex energy under discontinuous external loading. The underlying space is finite dimensional and the loads are functions in $BV([0,T];\mathbb{R}^d)$. We investigate the stability of various…

偏微分方程分析 · 数学 2023-08-30 Merlin Andreia , Christian Meyer

The higher-order nonlinear Schrodinger equation (Dysthe's equation in the context of water-waves) models the time evolution of the slowly modulated amplitude of a wave-packet in dispersive partial differential equations (PDE). These…

偏微分方程分析 · 数学 2024-12-18 Jack Keeler , Alberto Alberello , Ben Humphries , Emilian Parau

In this paper, we establish the transverse linear asymptotic stability of one-dimensional small-amplitude solitary waves of the gravity water-waves system. More precisely, we show that the semigroup of the linearized operator about the…

偏微分方程分析 · 数学 2024-02-20 Frédéric Rousset , Changzhen Sun