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We establish the vanishing viscosity limit of the Navier-Stokes equations to the Euler equations for three-dimensional compressible isentropic flow in the whole space. It is shown that there exists a unique regular solution of compressible…

偏微分方程分析 · 数学 2019-06-26 Yongcai Geng , Yachun Li , Shengguo Zhu

The relativistic full Euler equations for a Chaplygin gas are studied. The Riemann problem is solved constructively. There are two kinds of Riemann solutions, in which one consists of three contact discontinuities and the other involves a…

偏微分方程分析 · 数学 2017-09-26 Zhiqiang Shao

In this paper, we investigate the direct and indirect stability of locally coupled wave equations with local viscous damping on cylindrical and non-regular domains without any geometric control condition. If only one equation is damped, we…

偏微分方程分析 · 数学 2021-11-30 Mohammad Akil , Haidar Badawi , Serge Nicaise , Virginie Régnier

We study the 1-d isentropic Euler equations with time-decayed damping \begin{equation} \left\{ \begin{aligned} &\partial_t \rho+\partial_x(\rho u)=0, \\ &\partial_t(\rho u)+ \partial_x(\rho u^2)+\partial_xp(\rho)=-\frac{\mu}{1+t}\rho u,\\…

偏微分方程分析 · 数学 2022-08-08 Xinghong Pan

In this paper, we prove the existence of global weak solutions to the compressible two-fluid Navier-Stokes equations in three dimensional space. The pressure depends on two different variables from the continuity equations. We develop an…

偏微分方程分析 · 数学 2017-10-17 Alexis Vasseur , Huanyao Wen , Cheng Yu

We study a damped scalar conservation law driven by the sum of a fixed external force and a localised one-dimensional control. The problem is considered in a bounded domain and is supplemented with the Dirichlet boundary condition. It is…

偏微分方程分析 · 数学 2022-04-08 Ana Djurdjevac , Armen Shirikyan

In this paper we consider a singular nonlocal viscoelastic problem with a nonlinear source term and a possible damping term. We proved that if the initial data enter into the stable set, the solution exists globally and decays to zero with…

偏微分方程分析 · 数学 2013-03-19 Wenjun Liu , Yun Sun , Gang Li

In this paper, we extend considerably the global existence results of entropy-weak solutions related to compressible Navier-Stokes system with density dependent viscosities obtained, independently (using different strategies), by Vasseur-Yu…

偏微分方程分析 · 数学 2019-05-08 Didier Bresch , Alexis Vasseur , Cheng Yu

The properties of a one space-dimension, one particle dynamical system under the influence of a purely dissipative force are investigated. Assuming this force depends only on the velocity, it is demonstrated, in contrast to the case of…

计算物理 · 物理学 2014-05-19 Ronald E. Mickens , Kale Oyedeji

In this paper, we consider a two-phase flow model consisting of the compressible Navier-Stokes systems with degenerate viscosity coupled with the compressible Navier-Stokes systems with constant viscosities via a drag force, which can be…

偏微分方程分析 · 数学 2022-03-11 Ya-Ting Wang , Ling-Yun Shou

In this paper, we consider the global existence and uniqueness of the classical solutions for the 3D viscous liquid-gas two-phase flow model. Initial data is only small in the energy-norm. Our main ideas come from [15] where the existence…

偏微分方程分析 · 数学 2015-06-03 Haibo Cui , Huanyao Wen , Haiyan Yin

The solutions for a Riemann problem arising in chemical flooding models are studied using vanishing viscosity as an admissibility criterion. We show that when the flow function depends non-monotonically on the concentration of chemicals,…

偏微分方程分析 · 数学 2023-08-23 F. Bakharev , A. Enin , Yu. Petrova , N. Rastegaev

For periodic initial data with initial density allowed to vanish, we establish the global existence of strong and weak solutions for the two-dimensional compressible Navier-Stokes equations with no restrictions on the size of initial data…

偏微分方程分析 · 数学 2012-06-19 Xiangdi Huang , Jing Li

We prove the existence of weak solutions to steady, compressible non-Newtonian Navier-Stokes system on a bounded, two- or three-dimensional domain. Assuming the viscous stress tensor is monotone satisfying a power-law growth with power $r$…

偏微分方程分析 · 数学 2024-01-11 Cosmin Burtea , Maja Szlenk

The aim of this paper is to apply techniques of symmetry group analysis in solving two systems of conservation laws: a model of two strictly hyperbolic conservation laws and a zero pressure gas dynamics model, which both have no global…

偏微分方程分析 · 数学 2007-05-23 Sanja Konjik

In this paper, a class of variable-coefficient wave equations equipped with time-dependent damping and the nonlinear source is considered. We show that the total energy of the system decays to zero with an explicit and precise decay rate…

偏微分方程分析 · 数学 2023-04-25 Menglan Liao

In a three-dimensional bounded domain $\Omega$ we consider the compressible Navier-Stokes equations for a barotropic fluid with general non-linear density dependent viscosities and no-slip boundary conditions. A nonlinear drag term is added…

偏微分方程分析 · 数学 2025-02-11 Luca Bisconti , Matteo Caggio , Filippo Dell'Oro

We are concerned with the one-dimensional pressureless Euler system with relaxation in the Radon measure space. As the relaxation time tends to zero, the entropy solution converges to a static solution with the density converging to its…

偏微分方程分析 · 数学 2025-08-06 Guirong Tang

Let $n\geq 3$, $0< m<\frac{n-2}{n}$ and $T>0$. We construct positive solutions to the fast diffusion equation $u_t=\Delta u^m$ in $\mathbb{R}^n\times(0,T)$, which vanish at time $T$. By introducing a scaling parameter $\beta$ inspired by…

偏微分方程分析 · 数学 2018-11-13 Kin Ming Hui , Soojung Kim

We establish global well-posedness of strong solutions for the nonhomogeneous magnetohydrodynamic equations with density-dependent viscosity and initial density allowing vanish in two-dimensional (2D) bounded domains. Applying delicate…

偏微分方程分析 · 数学 2024-06-19 Xin Zhong