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We consider the Cauchy problem of the Euler-Poincar\'e equations in $\mathbb{R}^d$ with a varying dispersion parameter $\alpha$. Based on the convex entropy structure and the modified commutator estimates, we have proved that the…

偏微分方程分析 · 数学 2024-06-18 Min Li , Zhaoyang Yin

This paper is concerned with multidimensional Euler-Poisson equations for plasmas. The equations take the form of Euler equations for the conservation laws of the mass density and current density for charge-carriers (electrons and ions),…

偏微分方程分析 · 数学 2012-05-17 Jiang Xu , Ting Zhang

For the physical vacuum free boundary problem of the damped compressible Euler equations in both 2D and 3D, we prove the global existence of smooth solutions and justify their time-asymptotic equivalence to the corresponding Barenblatt…

偏微分方程分析 · 数学 2025-11-06 Huihui Zeng

The Euler-Poisson system is a fundamental two-fluid model to describe the dynamics of the plasma consisting of compressible electrons and a uniform ion background. In the 3D case Guo first constructed a global smooth irrotational solution…

数学物理 · 物理学 2013-11-25 Dong Li , Yifei Wu

We are concerned with the Cauchy problem of the two-dimensional (2D) nonhomogeneous incompressible Navier-Stokes equations with vacuum as far-field density. It is proved that if the initial density decays not too slow at infinity, the 2D…

偏微分方程分析 · 数学 2018-04-30 Boqiang Lv , Xiaoding Shi , Xin Zhong

In this paper, we prove the global well-posedness of the classical solution to the 2D Cauchy problem of the compressible Navier-Stokes equations with arbitrarily large initial data when the shear viscosity $\mu$ is a positive constant and…

偏微分方程分析 · 数学 2012-09-04 Quansen Jiu , Yi Wang , Zhouping Xin

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

In this paper, we study the Cauchy problem of the compressible Euler system with strongly singular velocity alignment. We prove the existence and uniqueness of global solutions in critical Besov spaces to the considered system with small…

偏微分方程分析 · 数学 2022-07-07 Xiang Bai , Qianyun Miao , Changhui Tan , Liutang Xue

We investigate global well-posedness to the Cauchy problem of three-dimensional compressible viscous and heat-conducting micropolar fluid equations with zero density at infinity. By delicate energy estimates, we establish global existence…

偏微分方程分析 · 数学 2022-03-15 Yang Liu , Xin Zhong

This paper establishes the global well-posedness of strong solutions to the nonhomogeneous magnetic B\'enard system with positive density at infinity in the whole space $\mathbb{R}^2$. More precisely, we obtain the global existence and…

偏微分方程分析 · 数学 2024-07-23 Jieqiong Liu

We establish the global-in-time existence of solutions of finite relative-energy for the multidimensional compressible Euler-Poisson equations for plasma with doping profile for large initial data of spherical symmetry. Both the total…

偏微分方程分析 · 数学 2023-09-07 Gui-Qiang G. Chen , Lin He , Yong Wang , Difan Yuan

This paper studies the global existence and uniqueness of strong solutions and its large-time behavior for the compressible isothermal Euler equations with a nonlocal dissipation. The system is rigorously derived from the kinetic…

偏微分方程分析 · 数学 2018-01-16 Young-Pil Choi

We consider the Cauchy problem with smooth data for compressible Euler equations in many dimensions and concentrate on two cases: solutions with finite mass and energy and solutions corresponding to a compact perturbation of a nontrivial…

偏微分方程分析 · 数学 2020-10-30 Olga Rozanova

For the physical vacuum free boundary problem with the sound speed being $C^{{1}/{2}}$-H$\ddot{\rm o}$lder continuous near vacuum boundaries of the one-dimensional compressible Euler equations with damping, the global existence of the…

偏微分方程分析 · 数学 2014-08-01 Tao Luo , Huihui Zeng

The global existence of smooth solutions to the vacuum free boundary problem with physical singularity of compressible Euler equations with damping and gravity is proved in space dimensions $n=1, 2, 3$, for the initial data being small…

偏微分方程分析 · 数学 2021-10-29 Huihui Zeng

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…

偏微分方程分析 · 数学 2021-06-03 Calum Rickard

For the Euler equations of isentropic gas dynamics in one space dimension, also knowns as p-system in Lagrangian coordinate, it is known that the density can be arbitrarily close to zero as time goes to infinity, even when initial density…

偏微分方程分析 · 数学 2014-10-14 Geng Chen , Ronghua Pan , Shengguo Zhu

We study existence of global solutions and finite time blow-up of solutions to the Cauchy problem for the porous medium equation with a variable density $\rho(x)$ and a power-like reaction term $\rho(x) u^p$ with $p>1$; this is a…

偏微分方程分析 · 数学 2020-03-30 Giulia Meglioli , Fabio Punzo

Whether the 3D compressible Navier-Stokes-Poisson equations admit global classical solutions for general large initial data has long been a challenging open problem. In this paper, we provide an affirmative answer to this question under…

偏微分方程分析 · 数学 2026-04-13 Jie Fan , Xiangdi Huang , Muxi Lei

We analyze the relativistic Euler equations of conservation laws of baryon number and momentum with a general pressure law. The existence of global-in-time bounded entropy solutions for the system is established by developing a compensated…

偏微分方程分析 · 数学 2022-05-11 Gui-Qiang G. Chen , Matthew R. I. Schrecker