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We consider the Cauchy problem for the continuity equation with a bounded nearly incompressible vector field $b\colon (0,T) \times \mathbb R^d \to \mathbb R^d$, $T>0$. This class of vector fields arises in the context of hyperbolic…

Analysis of PDEs · Mathematics 2016-10-28 Nikolay A. Gusev

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…

Analysis of PDEs · Mathematics 2025-03-06 Yinghua Li , Wenlin Ye

In this paper we investigate the issue of the inviscid limit for the compressible Navier-Stokes system in an impermeable fixed bounded domain. We consider two kinds of boundary conditions. The first one is the no-slip condition. In this…

Analysis of PDEs · Mathematics 2024-12-30 Franck Sueur

We find a kind of variations of Gauss-Codazzi-Ricci equations suitable for Kaluza-Klein reduction and Cauchy problem. Especially the counterpart of extrinsic curvature tensor has antisymmetric part as well as symmetric one. If the…

High Energy Physics - Theory · Physics 2007-05-23 Pei Wang

We consider an ensemble of classical particles coupled to a Klein-Gordon field. For the resulting nonlinear system of partial differential equations, which we call the relativistic Vlasov-Klein-Gordon system, we prove the existence of…

Analysis of PDEs · Mathematics 2009-11-07 Michael Kunzinger , Gerhard Rein , Roland Steinbauer , Gerald Teschl

We are interested in the evolution of a compressible fluid under its self-generated gravitational field. Assuming here Gowdy symmetry, we investigate the algebraic structure of the Euler equations satisfied by the mass density and velocity…

General Relativity and Quantum Cosmology · Physics 2020-11-30 Bruno Le Floch , Philippe G. LeFloch

We establish the vanishing viscosity limit of viscous Burgers-Vlasov equations for one dimensional kinetic model about interactions between a viscous fluid and dispersed particles by using compensated compactness technique and the evolution…

Analysis of PDEs · Mathematics 2020-06-09 Wentao Cao , Teng Wang

In this article we present a system of coupled non-linear PDEs modeling an anisotropic electrokinetic flow. We show the existence of suitable weak solutions in three spatial dimensions, that is weak solutions which fulfill an energy…

Analysis of PDEs · Mathematics 2024-07-30 Dietmar Hömberg , Robert Lasarzik , Luisa Plato

We are concerned with the global existence and vanishing dispersion limit of strong/classical solutions to the Cauchy problem of the one-dimensional barotropic compressible quantum Navier-Stokes equations, which consists of the compressible…

Analysis of PDEs · Mathematics 2023-12-08 Zhengzheng Chen , Huijiang Zhao

The present article investigates the existence, multiplicity and regularity of weak solutions of problems involving a combination of critical Hartree type nonlinearity along with singular and discontinuous nonlinearity. By applying…

Analysis of PDEs · Mathematics 2023-09-15 Gurdev C. Anthal , Jacques Giacomoni , Konijeti Sreenadh

We investigate sufficient H\"older continuity conditions on Leray-Hopf (weak) solutions to the in unsteady Navier-Stokes equations in three dimensions guaranteeing energy conservation. Our focus is on the half-space case with homogeneous…

Analysis of PDEs · Mathematics 2024-08-12 Luigi C. Berselli , Alex Kaltenbach , Michael Ružička

The Aubin-Lions lemma and its variants play crucial roles for the existence of weak solutions of nonlinear evolutionary PDEs. In this paper, we aim to develop some compactness criteria that are analogies of the Aubin--Lions lemma for the…

Functional Analysis · Mathematics 2018-07-06 Lei Li , Jian-Guo Liu

This article is devoted to the derivation and analysis of a system of partial differential equations modeling a diffuse interface flow of two Newtonian incompressible magnetic fluids. The system consists of the incompressible Navier-Stokes…

Analysis of PDEs · Mathematics 2020-04-22 Martin Kalousek , Sourav Mitra , Anja Schlömerkemper

In this paper, we study the global well-posedness of a coupled system of kinetic and fluid equations. More precisely, we establish the global existence of weak solutions for Navier-Stokes-BGK system consisting of the BGK model of Boltzmann…

Analysis of PDEs · Mathematics 2018-01-26 Young-Pil Choi , Seok-Bae Yun

We are concerned with the global existence of entropy solutions for the compressible Euler equations describing the gas flow in a nozzle with general cross-sectional area, for both isentropic and isothermal fluids. New viscosities are…

Analysis of PDEs · Mathematics 2023-09-06 Wentao Cao , Feimin Huang , Difan Yuan

We show that for any given solenoidal initial data in $L^2$ and any solenoidal external force in $L_{\text{loc}}^q \bigcap L^{3/2}$ with $q>3$, there exist partially regular weak solutions of the Navier-Stokes equations in $\R^4 \times…

Analysis of PDEs · Mathematics 2021-02-18 Bian Wu

We demonstrate a measure theoretical approach to the local regularity of weak supersolutions to elliptic and parabolic equations in divergence form. In the first part, we show that weak supersolutions become lower semicontinuous after…

Analysis of PDEs · Mathematics 2021-01-20 Naian Liao

We show the short-time existence and nonlinear stability of vortex sheets for the nonisentropic compressible Euler equations in two spatial dimensions, based on the weakly linear stability result of Morando--Trebeschi (2008) [20]. The…

Analysis of PDEs · Mathematics 2020-09-24 Alessandro Morando , Paola Trebeschi , Tao Wang

This is the first of a series of papers devoted to the initial value problem for the Euler system of compressible fluids and augmented versions containing higher-order terms. We encompass solutions that have finite total energy and enjoy a…

Analysis of PDEs · Mathematics 2012-12-24 Pierre Germain , Philippe G. LeFloch

We consider a class of doubly nonlinear degenerate hyperbolic-parabolic equations with homogeneous Dirichlet boundary conditions, for which we first establish the existence and uniqueness of entropy solutions. We then turn to the…

Analysis of PDEs · Mathematics 2009-01-08 Boris Andreianov , Mostafa Bendahmane , Kenneth H. Karlsen