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We deal with the global in time weak solutions to the 1D compressible Navier-Stokes system of equations for large discontinuous initial data and nonhomogeneous boundary conditions of three standard types. We prove the Lipschitz-type…

偏微分方程分析 · 数学 2026-02-04 Alexander Zlotnik

In this paper, we investigate a system coupled by nonhomogeneous incompressible Navier-Stokes equations and Allen-Cahn equations describing a diffuse interface for two-phase flow of viscous fluids with different densities in a bounded…

偏微分方程分析 · 数学 2025-03-06 Yinghua Li , Wenlin Ye

We show existence of global strong solutions with large initial data on the irrotational part for the shallow-water system in dimension $N\geq 2$. We introduce a new notion of \textit{quasi-solutions} when the initial velocity is assumed to…

偏微分方程分析 · 数学 2012-01-27 Boris Haspot

We study the large time behavior of solutions near a constant equilibrium to the compressible Euler-Maxwell system in $\r3$. We first refine a global existence theorem by assuming that the $H^3$ norm of the initial data is small, but the…

偏微分方程分析 · 数学 2015-09-29 Zhong Tan , Yanjin Wang , Yong Wang

We investigate the global unique Fujita-Kato solution to the 3-D inhomogeneous incompressible Navier-Stokes equations with initial velocity $u_0$ being sufficiently small in critical spaces and with initial density being bounded from above…

偏微分方程分析 · 数学 2024-10-15 Hammadi Abidi , Guilong Gui , Ping Zhang

We investigate systems of degenerate parabolic equations idealizing reactive solute transport in porous media. Taking advantage of the inherent structure of the system that allows to deduce a scalar Generalized Porous Medium Equation for…

偏微分方程分析 · 数学 2014-12-19 Tuomo Kuusi , Léonard Monsaingeon , Juha Videman

We analyze long-time behavior of solutions to a class of problems related to very fast and singular diffusion porous medium equations having nonhomogeneous in space and time source terms with zero mean. In dimensions two and three, we…

偏微分方程分析 · 数学 2022-10-24 Georgy Kitavtsev , Roman M. Taranets

In this work we study the relativistic mechanics of continuous media on a fundamental level using a manifestly covariant proper time procedure. We formulate equations of motion and continuity (and constitutive equations) that are the…

流体动力学 · 物理学 2022-10-12 S. Sklarz , L. P. Horwitz

We prove existence of weak solutions for a diffuse interface model for the flow of two viscous incompressible Newtonian fluids with different densities in a bounded domain in two and three space dimensions. In contrast to previous works, we…

偏微分方程分析 · 数学 2019-11-21 Helmut Abels , Yutaka Terasawa

We consider Navier-Stokes equations for compressible viscous fluids in the one-dimensional case with general viscosity coefficients. We prove the existence of global weak solution when the initial momentum $\rho_0 u_0$ belongs to the set of…

偏微分方程分析 · 数学 2019-01-11 Boris Haspot

The incompressible Micropolar system is given by two coupled equations: the first equation gives the evolution of the velocity field u while the second equation gives the evolution of the microrotation field $\omega$. In this article we…

偏微分方程分析 · 数学 2023-02-07 Diego Chamorro , David Llerena

We investigate multidimensional model for incompressible non-Newtonian fluids. Using method of energy estimates we prove the property of finite speed of propagations of the solution support for this problem. We find sharp bounds of the…

偏微分方程分析 · 数学 2007-12-10 Roman Taranets , Yuliya Namlyeyeva

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

In this work, we investigate a model describing flow through porous media with permeability heterogeneity, combining an advection-reaction-diffusion equation for solute concentration with an unsteady Darcy-Brinkman equation with Korteweg…

偏微分方程分析 · 数学 2026-04-14 Pankaj Roy , Satyajit Pramanik

In this paper, we consider unsaturated poroelasticity, i.e., coupled hydro-mechanical processes in unsaturated porous media, modeled by a non-linear extension of Biot's quasi-static consolidation model. The coupled, elliptic-parabolic…

偏微分方程分析 · 数学 2019-09-17 Jakub Wiktor Both , Iuliu Sorin Pop , Ivan Yotov

The present paper is devoted to the joint motion of two immiscible incompressible liquids in porous media. The liquids have different densities and initially separated by a surface of strong discontinuity (free boundary). We discuss the…

微分几何 · 数学 2011-10-10 O. V. Galtsev , A. M. Meirmanov

We consider solutions to the Cauchy problem for the incompressible Euler equations satisfying several additional requirements, like the global and local energy inequalities. Using some techniques introduced in an earlier paper we show that,…

偏微分方程分析 · 数学 2015-05-13 Camillo De Lellis , László Székelyhidi

We prove existence of a unique global-in-time weak solutions of the Navier-Stokes equations that govern the motion of a compressible viscous fluid with density-dependent viscosity in two-dimensional space. The initial velocity belongs to…

偏微分方程分析 · 数学 2024-09-18 Sagbo Marcel Zodji

We present pointwise space-time decay estimates for the velocity part of solutions to the time-dependent Oseen system in 3D, with Dirichlet boundary conditions and vanishing velocity at infinity. In addition, similar estimates are derived…

偏微分方程分析 · 数学 2017-09-06 Paul Deuring

We consider a simple nonlinear hyperbolic system modeling the flow of an inviscid fluid. The model includes as state variable the mass density fraction of the vapor in the fluid and then phase transitions can be taken into consideration;…

偏微分方程分析 · 数学 2014-08-27 Debora Amadori , Paolo Baiti , Andrea Corli , Edda Dal Santo