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In this paper, we study the approximate controllability of a system governed by an evolution problem known as the sloshing problem. This problem involves a spatial, nonlocal differential operator inherent in the dynamics of a…

偏微分方程分析 · 数学 2024-02-29 M. A. Fontelos , R. Lecaros , J. López-Ríos , A. Pérez

In this work we study the evolution of the free boundary between two different fluids in a porous medium where the permeability is a two dimensional step function. The medium can fill the whole plane $\mathbb{R}^2$ or a bounded strip…

偏微分方程分析 · 数学 2013-11-12 Luigi Berselli , Diego Cordoba , Rafael Granero-Belinchon

We consider port-Hamiltonian systems from a geometric perspective, where the quantities involved such as state, flows, and efforts evolve in (possibly infinite-dimensional) Banach spaces. The main contribution of this article is the…

动力系统 · 数学 2025-09-09 Timo Reis

In this paper, we study the existence and uniqueness of weak solution of a nonlinear poroelasticity model. To better describe the proccess of deformation and diffusion underlying in the original model, we firstly reformulate the nonlinear…

偏微分方程分析 · 数学 2021-12-24 Zhihao Ge , Wenlong He

The resolution of a very large class of linear and non-linear, stationary and evolutive partial differential problems in the half-space (or similar) under the slip boundary condition is reduced here to that of the corresponding results for…

偏微分方程分析 · 数学 2010-08-20 H. Beirão da Veiga , F. Crispo , C. R. Grisanti

We study the existence of travelling-waves and local well-posedness in a subspace of $C_b^1(\mathbb{R})$ for a nonlinear evolution equation recently proposed by Andrew C. Fowler to study the dynamics of dunes.

偏微分方程分析 · 数学 2018-03-29 Borys Alvarez-Samaniego , Pascal Azerad

This article is devoted to the proof of the well-posedness of a model describing waves propagating in shallow water in horizontal dimension $d=2$ and in the presence of a fixed partially immersed object. We first show that this…

偏微分方程分析 · 数学 2023-06-28 David Lannes , Tatsuo Iguchi

We study active surface wetting using a minimal model of bacteria that takes into account the intrinsic motility diversity of living matter. A mixture of "fast" and "slow" self-propelled Brownian particles is considered in the presence of a…

软凝聚态物质 · 物理学 2023-02-08 Mauricio Rojas-Vega , Pablo de Castro , Rodrigo Soto

We consider the abstract initial value problem for the system of evolution equations which describe motion of micropolar fluids with heat conduction in a bounded domain. This problem has uniquely a mild solution locally in time for general…

偏微分方程分析 · 数学 2010-06-07 Ryôhei Kakizawa

We consider an incompressible Bingham flow in a thin domain with rough boundary, under the action of given external forces and with no-slip boundary condition on the whole boundary of the domain. In mathematical terms, this problem is…

偏微分方程分析 · 数学 2024-01-30 Giuseppe Cardone , Carmen Perugia , Manuel Villanueva Pesqueira

We consider aspects of the population dynamics, inside a bound domain, of diffusing agents carrying an attribute which is stochastically destroyed upon contact with the boundary. The normal mode analysis of the relevant Helmholtz equation…

软凝聚态物质 · 物理学 2015-05-13 Seungoh Ryu

We consider an viscous, incompressible Newtonian fluid flowing through a thin elastic structure. The motion of the structure is described by the equations of a linearised Koiter shell, whose motion is restricted to transverse displacements.…

偏微分方程分析 · 数学 2018-07-20 Hannes Eberlein , Michael Ruzicka

In this paper, we study the well-posedness of a class of evolutionary variational-hemivariational inequalities coupled with a nonlinear ordinary differential equation in Banach spaces. The proof is based on an iterative approximation scheme…

偏微分方程分析 · 数学 2024-06-18 Nadia Skoglund Taki , Kundan Kumar

We consider the evolution of contact lines for viscous fluids in a two-dimensional open-top vessel. The domain is bounded above by a free moving boundary and otherwise by the solid wall of a vessel. The dynamics of the fluid are governed by…

偏微分方程分析 · 数学 2016-09-23 Yunrui Zheng , Ian Tice

This work is dedicated to putting on a solid analytic ground the theory of local well-posedness for the two dimensional Dysthe equation. This equation can be derived from the incompressible Navier-Stokes equation after performing an…

偏微分方程分析 · 数学 2020-07-02 Ricardo Grande , Kristin M. Kurianski , Gigliola Staffilani

We study a class of degenerate convection diffusion equations with a fractional nonlinear diffusion term. These equations are natural generalizations of anomalous diffusion equations, fractional conservations laws, local convection…

偏微分方程分析 · 数学 2011-07-28 Simone Cifani , Espen R. Jakobsen

Considering the boundary layer problem in the case of two-dimensional flow past a wedge with the wedge angle $\varphi=\pi\frac{2m}{m+1}$, Oleinik and Samokhin obtained the local well-posedness results for $m \geq 1$. In this paper, we…

偏微分方程分析 · 数学 2023-04-03 Chen Gao , Liqun Zhang , Chuankai Zhao

We study the well-posedness of the Cauchy problem for a fractional porous medium equation with a varying density. We establish existence of weak energy solutions; uniqueness and nonuniqueness is studied as well, according with the behavior…

偏微分方程分析 · 数学 2013-02-04 Fabio Punzo , Gabriele Terrone

We establish the local well-posedness of the Bartnik static metric extension problem for arbitrary Bartnik data that perturb that of any sphere in a Schwarzschild $\{t=0\}$ slice. Our result in particular includes spheres with arbitrary…

偏微分方程分析 · 数学 2025-12-22 Ahmed Ellithy

We study the question of weak solvability for a nonlinear coupled parabolic system that models the evolution of a complex pedestrian flow. The main feature is that the flow is composed of a mix of densities of active and passive pedestrians…

偏微分方程分析 · 数学 2019-10-14 T. K. Thoa Thieu , Matteo Colangeli , Adrian Muntean