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We establish a relative energy framework for the Euler-Korteweg system with non-convex energy. This allows us to prove weak-strong uniqueness and to show convergence to a Cahn-Hilliard system in the large friction limit. We also use…

Analysis of PDEs · Mathematics 2017-09-08 Jan Giesselmann , Athanasios E. Tzavaras

In this article, the weak-strong uniqueness principle is proved for an Euler-Poisson system in the whole space, with initial data so that the strong solution exists. Some results on Riesz potentials are used to justify the considered weak…

Analysis of PDEs · Mathematics 2024-04-16 Nuno J. Alves

We investigate the Cauchy problem of three-dimensional compressible non-isothermal nematic liquid crystal flows in $\mathbb{R}^3$. We derive the global existence and uniqueness of strong solutions with both interior and far field vacuum…

Analysis of PDEs · Mathematics 2021-08-24 Yang Liu , Xin Zhong

We consider the global existence and large-time asymptotic behavior of strong solutions to the Cauchy problem of the three-dimensional nonhomogeneous incompressible Navier-Stokes equations with density-dependent viscosity and vacuum. We…

Analysis of PDEs · Mathematics 2021-01-12 Cheng He , Jing Li , Boqiang Lü

In this paper, the Cauchy problem for the three-dimensional (3-D) isentropic compressible Navier-Stokes equations is considered. When viscosity coefficients are given as a constant multiple of the density's power ($\rho^\delta$ with…

Analysis of PDEs · Mathematics 2019-04-08 Zhouping Xin , Shengguo Zhu

This paper is concerned with the three-dimensional equations of a simplified hydrodynamic flow modeling the motion of compressible, nematic liquid crystal materials. The authors establish the global existence of classical solution to the…

Analysis of PDEs · Mathematics 2012-04-24 Jing Li , Zhonghai Xu , Jianwen Zhang

We are concerned with the formation of singularities and the existence of global continuous solutions of the Cauchy problem for the one-dimensional non-isentropic Euler equations for compressible fluids. For the isentropic Euler equations,…

Analysis of PDEs · Mathematics 2021-11-09 Geng Chen , Gui-Qiang G. Chen , Shengguo Zhu

We consider admissible weak solutions to the compressible Euler system with source terms, which include rotating shallow water system and the Euler system with damping as special examples. In the case of anti-symmetric sources such as…

Analysis of PDEs · Mathematics 2015-06-04 Tianwen Luo , Chunjing Xie , Zhouping Xin

We consider the Cauchy problem for wave equations with unbounded damping coefficients in the whole space. For a general class of unbounded damping coefficients, we derive uniform total energy decay estimates together with a unique existence…

Analysis of PDEs · Mathematics 2017-06-14 Ryo Ikehata , Hiroshi Takeda

We consider a hydrodynamic model of flocking-type with all-to-all interaction kernel in one-space dimension and establish that the global entropy weak solutions, constructed in [2] to the Cauchy problem for any $BV$ initial data that has…

Analysis of PDEs · Mathematics 2023-09-06 Debora Amadori , Cleopatra Christoforou

We consider weakly regular Gowdy-symmetric spacetimes on T3 satisfying the Einstein-Euler equations of general relativity, and we solve the initial value problem when the initial data set has bounded variation, only, so that the…

General Relativity and Quantum Cosmology · Physics 2015-06-12 Nastasia Grubic , Philippe G. LeFloch

We investigate the relation between several generalized solution concepts for nonlinear PDE systems from fluid dynamics. More precisely, we study measure-valued solutions, dissipative weak solutions, and energy-variational solutions. For…

Analysis of PDEs · Mathematics 2026-04-02 Thomas Eiter , Robert Lasarzik , Emil Wiedemann

This paper concerns the uniqueness of weak solutions to the Cauchy problem to the Ericksen-Leslie system of liquid crystal models in $\mathbb R^2$, with both general Leslie stress tensors and general Oseen-Frank density. It is shown here…

Analysis of PDEs · Mathematics 2014-10-07 Jinkai Li , Edriss S. Titi , Zhouping Xin

This work is devoted to the study of the initial boundary value problem for a general non isothermal model of capillary fluids derived by J.E Dunn and J.Serrin (1985), which can be used as a phase transition model. We distinguish two cases,…

Analysis of PDEs · Mathematics 2008-03-14 Boris Haspot

We consider the Cauchy problem for the barotropic Euler system coupled to a vector Schr\"{o}dinger equation in the whole space. Assuming that the initial density and vector potential are small enough, and that the initial velocity is close…

Analysis of PDEs · Mathematics 2025-05-22 Kuntal Bhandari , Bernard Ducomet , Šarka Nečasová , John Sebastian H. Simon

We consider the Euler system set on a bounded convex planar domain, endowed with impermeability boundary conditions. This system is a model for the barotropic mode of the Primitive Equations on a rectangular domain. We show the existence of…

Analysis of PDEs · Mathematics 2013-08-19 Claude Bardos , Francesco Di Plinio , Roger Temam

We consider the Cauchy problem for an equation of Korteweg-de Vries-Kawahara type with initial data in the analytic Gevrey spaces. By using linear, bilinear and trilinear estimates in analytic Bourgain spaces, we establish the local…

Analysis of PDEs · Mathematics 2022-05-24 Aissa Boukarou , Daniel Oliveira da Silva

Global stability of the spherically symmetric nonisentropic compressible Euler equations with positive density around global-in-time background affine solutions is shown in the presence of free vacuum boundaries. Vacuum is achieved despite…

Analysis of PDEs · Mathematics 2021-06-03 Calum Rickard

We analyze existence and properties of solutions of two-dimensional general relativistic initial data sets with a negative cosmological constant, both on spacelike and characteristic surfaces. A new family of such vacuum, spacelike data…

General Relativity and Quantum Cosmology · Physics 2025-04-07 Piotr T. Chruściel , Wan Cong , Théophile Quéau , Raphaela Wutte

We consider the 2-d isentropic compressible Euler equations. It was shown in by E. Chiodaroli, C. De Lellis and O. Kreml that there exist Riemann initial data as well as Lipschitz initial data for which there exist infinitely many weak…

Analysis of PDEs · Mathematics 2019-01-21 Simon Markfelder , Christian Klingenberg