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We study a class of nonlinear elliptic problems driven by a double-phase operator with variable exponents, arising in the modeling of heterogeneous materials undergoing phase transitions. The associated Poisson problem features a…

偏微分方程分析 · 数学 2025-07-09 Mohamed Khamsi , Osvaldo Mendez

The nonlinear dispersive wave equation inside the cylindrical elastic rod is derived by applying the Navier-Bernoulli hypothesis and Love's relation in \cite{5}. The elastic rod is assumed to be composed of the Murnaghan's materials such as…

数学物理 · 物理学 2021-01-14 Rathinavel Silambarasan , Adem Kilicman

In this work, we present some new Carleman inequalities for Stokes and Oseen equations with non-homogeneous boundary conditions. These estimates lead to log type stability inequalities for the problem of recovering the solution of the…

偏微分方程分析 · 数学 2022-07-19 Mehdi Badra , Fabien Caubet , Jérémi Dardé

We prove a stability result of constant equilibria for the three-dimensional Navier-Stokes-Poisson system uniform in the inviscid limit. We allow the initial density to be close to a constant and the potential part of the initial velocity…

偏微分方程分析 · 数学 2020-11-17 Frédéric Rousset , Changzhen Sun

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

We consider the Riemann problem composed of two shocks for the 1D Euler system. We show that the Riemann solution with two shocks is stable and unique in the class of weak inviscid limits of solutions to the Navier-Stokes equations with…

偏微分方程分析 · 数学 2020-11-12 Moon-Jin Kang , Alexis Vasseur

We study what is clearly one of the most common modes of deformation found in nature, science and engineering, namely the large elastic bending of curved structures, as well as its inverse, unbending, which can be brought beyond complete…

软凝聚态物质 · 物理学 2018-06-11 Taisiya Sigaeva , Robert Mangan , Luigi Vergori , Michel Destrade , Les Sudak

For both continuous-time and discrete-time Markov Chains, we provide criteria for inverse problems of classical types of ergodicity: (ordinary) erogodicity, algebraic ergodicity, exponential ergodicity and strong ergodicity. Our criteria…

概率论 · 数学 2024-05-06 Zhi-Feng Wei

In this note, we show the existence of regular solutions to the stationary version of the Navier-Stokes system for compressible fluids with a density dependent viscosity, known as the shallow water equations. For arbitrary large forcing we…

偏微分方程分析 · 数学 2016-07-15 Šimon Axmann , Piotr B. Mucha , Milan Pokorný

We study 2D Navier-Stokes equations with a constraint on $L^2$ energy of the solution. We prove the existence and uniqueness of a global solution for the constrained Navier-Stokes equation on $\R^2$ and $\T$, by a fixed point argument. We…

偏微分方程分析 · 数学 2018-01-11 Zdzisław Brzeźniak , Gaurav Dhariwal , Mauro Mariani

The incompressible Navier-Stokes equations and static Euler equations are considered. We find that there exist infinite non-trivial regular solutions of incompressible static Euler equations with given boundary conditions. Moreover there…

偏微分方程分析 · 数学 2025-02-18 Yongqian Han

We develop three inverse elastic scattering schemes for locating multiple small, extended and multiscale rigid bodies, respectively. There are some salient and promising features of the proposed methods. The cores of those schemes are…

偏微分方程分析 · 数学 2013-10-15 Guanghui Hu , Jingzhi Li , Hongyu Liu , Hongpeng Sun

The inverse problem for electromagnetic field produced by arbitrary altered charge distribution in dipole approximation is solved. The charge distribution is represented by its dipole moment. It is assumed that the spectral properties of…

经典物理 · 物理学 2015-05-06 V. Epp , J. G. Janz

The Navier equation is the governing equation of elastic waves, and computing its solution accurately and rapidly has a wide range of applications in geophysical exploration, materials science, etc. In this paper, we focus on the efficient…

数值分析 · 数学 2023-10-19 Jianan Yao , Baoling Xie , Jun Lai

A hydrodynamic description for an $s$-component mixture of inelastic, smooth hard disks (two dimensions) or spheres (three dimensions) is derived based on the revised Enskog theory for the single-particle velocity distribution functions. In…

统计力学 · 物理学 2009-11-13 V. Garzo , J. W. Dufty , C. M. Hrenya

The equations of stationary compressible flows of active liquid crystals are considered in a bounded three-dimensional domain. The system consists of the stationary Navier-Stokes equations coupled with the equation of Q-tensors and the…

偏微分方程分析 · 数学 2022-05-03 Zhilei Liang , Apala Majumdar , Dehua Wang , Yixuan Wang

We study the coherent propagation and incoherent diffusion of in-plane elastic waves in a two dimensional continuum populated by many, randomly placed and oriented, edge dislocations. Because of the Peierls-Nabarro force the dislocations…

材料科学 · 物理学 2020-12-02 Dmitry Churochkin , Fernando Lund

We prove uniqueness of weak solutions of the three-dimensional compressible Navier-Stokes equations with potential force. We make use of the Lagrangean framework in comparing the instantaneous states of corresponding fluid particles in two…

偏微分方程分析 · 数学 2020-12-15 Anthony Suen

Existence, uniqueness, and regularity of time-periodic solutions to the Navier-Stokes equations in the three-dimensional whole-space are investigated. We consider the Navier-Stokes equations with a non-zero drift term corresponding to the…

偏微分方程分析 · 数学 2015-06-17 Mads Kyed

We study the unsteady incompressible Navier-Stokes equations in three dimensions interacting with a non-linear flexible shell of Koiter type. This leads to a coupled system of non-linear PDEs where the moving part of the boundary is an…

偏微分方程分析 · 数学 2022-11-15 Boris Muha , Sebastian Schwarzacher