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We investigate the initial-value problem for the relativistic Euler equations governing isothermal perfect fluid flows, and generalize an approach introduced by LeFloch and Shelukhin in the non-relativistic setting. We establish the…

偏微分方程分析 · 数学 2007-05-23 Philippe G. LeFloch , Mitsuru Yamazaki

We consider the isothermal Euler system with damping. We rigorously show the convergence of Barenblatt solutions towards a limit Gaussian profile in the isothermal limit $\gamma$ $\rightarrow$ 1, and we explicitly compute the propagation…

偏微分方程分析 · 数学 2021-09-09 Quentin Chauleur

We consider the asymptotic behavior of compressible isentropic flow when the initial mass is finite, which is modeled by the compressible Euler equation with frictional damping. It is shown in \cite{HUA} (resp.\cite{GEN}) that any…

偏微分方程分析 · 数学 2024-08-27 Jun-Ren Luo , Ti-Jun Xiao

In this work we analyze the entropic properties of the Euler equations when the system is closed with the assumption of a polytropic gas. In this case, the pressure solely depends upon the density of the fluid and the energy equation is not…

数值分析 · 数学 2019-07-09 Andrew R. Winters , Christof Czernik , Moritz B. Schily , Gregor J. Gassner

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…

偏微分方程分析 · 数学 2023-09-06 Wentao Cao , Feimin Huang , Difan Yuan

We study the Cauchy problem associated with the system of two conservation laws arising in isothermal gas dynamics, in which the pressure and the density are related by the $\gamma$-law equation $p(\rho) \sim \rho^\gamma$ with $\gamma =1$.…

偏微分方程分析 · 数学 2009-11-13 Philippe G. LeFloch , Vladimir Shelukhin

Considering the isentropic Euler equations of compressible fluid dynamics with geometric effects included, we establish the existence of entropy solutions for a large class of initial data. We cover fluid flows in a nozzle or in spherical…

偏微分方程分析 · 数学 2008-12-16 Philippe G. LeFloch , Michael Westdickenberg

We study the asymptotic behavior of compressible isentropic flow when the initial mass is finite and the friction varies with time, which is modeled by the compressible Euler equation with time-dependent damping. In this paper, we obtain…

偏微分方程分析 · 数学 2024-12-16 Jun-Ren Luo , Ti-Jun Xiao

In this paper, we examine the question of the boundary controllability of the one-dimensional non-isentropic Euler equation for compressible polytropic gas, in the context of weak entropy solutions. We consider the system in Eulerian…

最优化与控制 · 数学 2013-04-16 Olivier Glass

This paper investigates the asymptotic behavior of a hyperbolic relaxation system designed for homogeneous two-phase flows in the limit of vanishing relaxation time. The governing equations comprise conservation laws for mixture mass and…

偏微分方程分析 · 数学 2026-03-19 Huimin Yu

We prove a rigorous convergence result for the compressible to incompressible limit of weak entropy solutions to the isothermal 1D Euler equations.

偏微分方程分析 · 数学 2013-08-20 Rinaldo M. Colombo , Graziano Guerra , Veronika Schleper

In this paper, we first investigate quasi-entropy solutions to scalar conservation laws in several space dimensions. In this setting, we introduce a suitable Lagrangian representation for such solutions. Next, we prove that, in one space…

偏微分方程分析 · 数学 2026-01-08 Fabio Ancona , Elio Marconi , Luca Talamini

In this paper we consider the isentropic compressible Euler equations in two space dimensions together with particular initial data. The latter consists only of two constant states, where one state lies on the lower and the other state on…

偏微分方程分析 · 数学 2017-10-09 Christian Klingenberg , Simon Markfelder

We are concerned with spherically symmetric solutions to the Euler equations for the multi-dimensional compressible fluids, which have many applications in diverse real physical situations. The system can be reduced to one dimensional…

偏微分方程分析 · 数学 2019-08-20 Feimin Huang , Tianhong Li , Difan Yuan

We establish the existence and compactness of global martingale entropy solutions with finite relative-energy for the stochastically forced system of isentropic Euler equations governed by a general pressure law. To achieve these, a…

偏微分方程分析 · 数学 2025-12-30 Gui-Qiang G. Chen , Feimin Huang , Danli Wang

We prove the existence of relative finite-energy vanishing viscosity solutions of the one-dimensional, isentropic Euler equations under the assumption of an asymptotically isothermal pressure law, that is, $p(\rho)/\rho = O(1)$ in the limit…

偏微分方程分析 · 数学 2020-06-08 Matthew R. I. Schrecker , Simon Schulz

In this paper we extend and complement some recent results by Chiodaroli, De Lellis and Kreml on the well-posedness issue for weak solutions of the compressible isentropic Euler system in $2$ space dimensions with pressure law…

偏微分方程分析 · 数学 2014-08-26 Elisabetta Chiodaroli , Ondřej Kreml

The large time behavior of entropy solution to the compressible Euler equations for polytropic gas (the pressure $p(\rho)=\kappa\rho^{\gamma}, \gamma>1$) with time dependent damping like $-\frac{1}{(1+t)^\lambda}\rho u$ ($0<\lambda<1$) is…

偏微分方程分析 · 数学 2022-08-30 Geng Shifeng , Huang Feimin , Wu Xiaochun

We are concerned with the global existence and large time behavior of entropy solutions to the one dimensional unipolar hydrodynamic model for semiconductors in the form of Euler-Poisson equations in a bounded interval. In this paper, we…

偏微分方程分析 · 数学 2018-07-25 Feimin Huang , Tianhong Li , Huimin Yu , Difan Yuan

We establish the vanishing viscosity limit of the Navier-Stokes equations to the isentropic Euler equations for one-dimensional compressible fluid flow. For the Navier-Stokes equations, there exist no natural invariant regions for the…

偏微分方程分析 · 数学 2009-10-14 Gui-Qiang Chen , Mikhail Perepelitsa
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