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We study travelling-wave spatially periodic solutions of a forced Cahn-Hilliard equation. This is a model for phase separation of a binary mixture, subject to external forcing. We look at arbitrary values of the mean mixture concentration,…

动力系统 · 数学 2018-08-31 Lennon O'Naraigh

The travelling wave problem for a particular bidirectional Whitham system modelling surface water waves is under consideration. This system firstly appeared in [Dinvay, Dutykh, Kalisch 2018], where it was numerically shown to be stable and…

偏微分方程分析 · 数学 2021-01-13 Evgueni Dinvay , Dag Nilsson

The viscous regularization of an ill-posed diffusion equation with bistable nonlinearity predicts a hysteretic behavior of dynamical phase transitions but a complete mathematical \mbox{understanding} of the intricate multiscale evolution is…

偏微分方程分析 · 数学 2023-11-21 Carina Geldhauser , Michael Herrmann , Dirk Janßen

We investigate the linearized hydrodynamic equations of interacting self-propelled particles in two dimensional space. It is found that the small perturbations of density and polarization fields satisfy the hyperbolic partial differential…

生物物理 · 物理学 2019-01-01 Waipot Ngamsaad , Suthep Suantai

We study the existence of traveling wave solutions for a diffusive predator-prey system. The system considered in this paper is governed by a Sigmoidal response function which is more general than those studied previously. Our method is an…

斑图形成与孤子 · 物理学 2015-05-28 Xiaobiao Lin , Peixuan Weng , Chufen Wu

We identify a new type of pattern formation in spatially distributed active systems. We simulate one-dimensional two-component systems with predator-prey local interaction and pursuit-evasion taxis between the components. In a sufficiently…

斑图形成与孤子 · 物理学 2013-05-29 V. N. Biktashev , M. A. Tsyganov

We study the free boundary problem for a finite-depth layer of viscous incompressible fluid in arbitrary dimension, modeled by the Stokes or Navier-Stokes equations. In addition to the gravitational field acting in the bulk, the free…

偏微分方程分析 · 数学 2026-01-21 Seyed Abdolhamid Banihashemi , Huy Q. Nguyen

We analyze a non-standard isoperimetric problem in the plane associated with a metric having degenerate conformal factor at two points. Under certain assumptions on the conformal factor, we establish the existence of curves of least length…

偏微分方程分析 · 数学 2015-09-15 Stan Alama , Lia Bronsard , Andres Contreras , Jiri Dadok , Peter Sternberg

This paper presents results on the unboundedness and minimal speed of traveling wave solutions for a one-dimensional spatial reaction-diffusion equation with an asymptotically linear reaction term and a saturation parameter. By applying a…

动力系统 · 数学 2026-05-11 Yu Ichida

This work is devoted to study of a class of elliptic singular perturbed systems and their singular limit to a phase segregating system. We prove existence and uniqueness and study the asymptotic behaviour with convergence to a limiting…

偏微分方程分析 · 数学 2019-01-28 Farid Bozorgnia , Martin Burger

We present a computational analysis of a 2$\times$2 hyperbolic system of balance laws whose solutions exhibit complex nonlinear behavior. Traveling-wave solutions of the system are shown to undergo a series of bifurcations as a parameter in…

流体动力学 · 物理学 2018-11-13 Dmitry I. Kabanov , Aslan R. Kasimov

In this article we investigate traveling wave solutions of a nonlinear differential equation describing the behaviour of one-dimensional viscoelastic medium with implicit constitutive relations. We focus on a subclass of such models known…

数学物理 · 物理学 2015-07-28 H. A. Erbay , Y. Şengül

We investigate the connection between the existence of an explicit travelling wave solution and the travelling wave with minimal speed in a scalar monostable reaction-diffusion equation.

偏微分方程分析 · 数学 2020-08-18 Elaine C. M. Crooks , Michael Grinfeld

We study traveling wave solutions of an equation for surface waves of moderate amplitude arising as a shallow water approximation of the Euler equations for inviscid, incompressible and homogenous fluids. We obtain solitary waves of…

经典分析与常微分方程 · 数学 2013-12-06 Armengol Gasull , Anna Geyer

We analyze travelling wave (TW) solutions for nonlinear systems consisting of an ODE coupled to a degenerate PDE with a diffusion coefficient that vanishes as the solution tends to zero and blows up as it approaches its maximum value.…

偏微分方程分析 · 数学 2022-02-17 Koondanibha Mitra , Jack M. Hughes , Stefanie Sonner , Hermann J. Eberl , Jack D. Dockery

We proved the existence and uniqueness of a traveling wave solution to the thin film equation with a Navier slip condition at the liquid-solid interface. We obtain explicit lower and upper bounds for the solution and an absolute error…

偏微分方程分析 · 数学 2008-05-08 Roman M. Taranets

In this paper, we systematically study the existence, asymptotic behaviors, uniqueness, and nonlinear orbital stability of traveling-wave solutions with small propagation speeds for the generalized surface quasi-geostrophic (gSQG) equation.…

偏微分方程分析 · 数学 2026-02-10 Daomin Cao , Shanfa Lai , Guolin Qin

We study multiplicity of the supercritical traveling front solutions for scalar reaction-diffusion equations in infinite cylinders which invade a linearly unstable equilibrium. These equations are known to possess traveling wave solutions…

偏微分方程分析 · 数学 2013-09-24 P. V. Gordon , C. B. Muratov , M. Novaga

A key feature of $(1+1)$-dimensional nonlinear wave equations is that they admit left or right traveling waves, under appropriate algebraic conditions on the nonlinearities. In this paper, we prove global stability of such traveling wave…

偏微分方程分析 · 数学 2023-01-31 Louis Dongbing Cha , Arick Shao

In this paper we will establish nonlinear a priori lower and upper bounds for the solutions to a large class of equations which arise from the study of traveling wave solutions of reaction-diffusion equations, and we will apply our…

偏微分方程分析 · 数学 2019-07-15 Li-Chang Hung , Xian Liao