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The existence and uniqueness of weak solutions is shown for a system related to the Willis model of elastodynamics. Both the whole space case and the case of a bounded smooth domain are studied. To this end the equations are reformulated as…

偏微分方程分析 · 数学 2025-11-27 Thomas Blesgen , Patrizio Neff

We introduce a stochastic system of interacting particles which is expected to furnish as the number of particles goes to infinity a stochastic approach of the 2-D Keller-Segel model. In this note, we prove existence and some uniqueness for…

概率论 · 数学 2016-02-01 Patrick Cattiaux , Laure Pédèches

In this work we study the coupled system of partial and ordinary differential equations describing the interaction between a compressible isentropic viscous fluid and a rigid body moving freely inside the fluid. In particular the position…

偏微分方程分析 · 数学 2019-05-27 Ondrej Kreml , Sarka Necasova , Tomasz Piasecki

We consider quasi-static poroelastic systems with incompressible constituents. The nonlinear permeability is taken to be dependent on solid dilation, and physical types of boundary conditions (Dirichlet, Neumann, and mixed) for the fluid…

偏微分方程分析 · 数学 2022-02-23 Lorena Bociu , Boris Muha , Justin T. Webster

There are two main directions in this paper. One is to find sufficient conditions to ensure the existence of weak solutions to thermoelectric problems. At the steady-state, these problems consist by a coupled system of elliptic equations of…

偏微分方程分析 · 数学 2017-01-11 Luisa Consiglieri

A review of the present state of investigations of the pseudospin-electron model (PEM), which is used in the theory of strongly correlated electron systems, is given. The model is used to describe the systems with the locally anharmonic…

强关联电子 · 物理学 2016-11-23 Ihor Stasyuk

In the present work, we consider the evolution of two fluids separated by a sharp interface in the presence of surface tension - like, for example, the evolution of oil bubbles in water. Our main result is a weak-strong uniqueness principle…

偏微分方程分析 · 数学 2020-02-26 Julian Fischer , Sebastian Hensel

In this paper we analyze the three-dimensional Peterlin viscoelastic model. By means of a mixed Galerkin and semigroup approach we prove the existence of a weak solutions. Further combining parabolic regularity with the relative energy…

偏微分方程分析 · 数学 2022-03-24 Aaron Brunk , Yong Lu , Maria Lukacova-Medvidova

In this paper, an a priori estimate of weak solutions to the mixed Navier-Stokes/Darcy model with Beavers-Joseph-Saffman's interface condition and the existence of a weak solution are established without the small data and/or the large…

偏微分方程分析 · 数学 2017-01-05 Yanren Hou , Haibiao Zheng

A finite element discretization using a method of lines approached is proposed for approximately solving the Poisson-Nernst-Planck (PNP) equations. This discretization scheme enforces positivity of the computed solutions, corresponding to…

数值分析 · 数学 2015-03-17 Chun Liu , Maximilian Metti , Jinchao Xu

The present paper studies existence and distributional uniqueness of subclasses of stationary hard-core particle systems arising as thinnings of stationary particle processes. These subclasses are defined by natural maximality criteria. We…

概率论 · 数学 2018-01-17 Christian Hirsch , Günter Last

We establish the global existence of weak solutions to a nonlinear kinetic Fokker--Planck equation with degenerate diffusion, under either inflow or partial absorption-reflection boundary conditions. The novelty of our approach lies in…

偏微分方程分析 · 数学 2025-10-09 Young-Pil Choi , Sihyun Song

In this paper, a class of systems of pseudo-parabolic PDEs is considered. These systems (S)$_\varepsilon$ are derived as a pseudo-parabolic dissipation system of Kobayashi--Warren--Carter energy, proposed by [Kobayashi et al., Physica D,…

偏微分方程分析 · 数学 2024-07-30 Daiki Mizuno

We show that some boundary conditions assumed at a thin membrane may result in normal diffusion not being the stochastic Markov process. We consider boundary conditions defined in terms of the Laplace transform in which there is a linear…

统计力学 · 物理学 2020-08-26 Tadeusz Kosztołowicz

In this paper we introduce a finite element method for the Stokes equations with a massless immersed membrane. This membrane applies normal and tangential forces affecting the velocity and pressure of the fluid. Additionally, the points…

数值分析 · 数学 2019-05-01 Kyle Dunn , Roger Lui , Marcus Sarkis

We consider a constrained minimal energy problem with an external field over noncompact classes of infinite dimensional vector measures on a locally compact space. The components are positive measures (charges) that are constrained from…

经典分析与常微分方程 · 数学 2010-10-12 Natalia Zorii

The uniqueness of bounded weak solutions to strongly coupled parabolic equations in a bounded domain with no-flux boundary conditions is shown. The equations include cross-diffusion and drift terms and are coupled selfconsistently to the…

偏微分方程分析 · 数学 2017-06-28 Xiuqing Chen , Ansgar Jüngel

Monte Carlo simulations have been performed to determine the excess energy and the equation of state of fcc solids with Sutherland potentials for wide ranges of temperatures, densities and effective potential ranges. The same quantities…

统计力学 · 物理学 2007-05-23 A. Diez , J. Largo , J. R. Solana

We consider the compressible Vlasov-Poisson-Fokker-Planck-Navier-Stokes system in a three dimensional bounded domain with nonhomogeneous Dirichlet boundary conditions. The system describes the evolution of charged particles ensemble…

偏微分方程分析 · 数学 2023-01-04 Li Chen , Fucai Li , Yue Li , Nicola Zamponi

Regularity and uniqueness of weak solution of the compressible isentropic Navier-Stokes equations is proven for small time in dimension $N=2,3$ under periodic boundary conditions. In this paper, the initial density is not required to have a…

偏微分方程分析 · 数学 2010-01-12 Boris Haspot