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In the spirit of D. Hoff's weak solution theory for the compressible Navier-Stokes equations (CNS) with bounded density, in this paper we establish the global existence and regularity properties of finite-energy weak solutions to an initial…

偏微分方程分析 · 数学 2025-09-03 Jin Tan , Yan-Lin Wang , Lan Zhang

In this paper, we prove a sharp and strong non-uniqueness for a class of weak solutions to the three-dimensional magneto-hydrodynamic (MHD) system. More precisely, we show that any weak solution $(v,b)\in L^p_tL^{\infty}_x$ is non-unique in…

偏微分方程分析 · 数学 2022-08-31 Yao Nie , Weikui Ye

In this paper, we prove the global well-posedness for the three-dimensional magnetohydrodynamics (MHD) equations with zero viscosity and axisymmetric initial data. First, we analyze the problem corresponding to the Sobolev regularities $…

偏微分方程分析 · 数学 2022-08-10 Zineb Hassainia

We prove the existence of both local and global smooth solutions to the Cauchy problem in $\R^3$ for the incompressible magnetohydrodynamics (MHD) system. We also prove that the solution to the incompressible MHD system can be obtained as…

偏微分方程分析 · 数学 2020-11-16 Anthony Suen

We study the partial regularity of suitable weak solutions to the three dimensional incompressible Navier--Stokes equations. There have been several attempts to refine the Caffarelli--Kohn--Nirenberg criterion (1982). We present an improved…

偏微分方程分析 · 数学 2016-06-10 Hi Jun Choe , Joerg Wolf , Minsuk Yang

In this paper we establish the uniform estimates of strong solutions with respect to the Mach number and the dielectric constant to the full compressible Navier-Stokes-Maxwell system in a bounded domain. Based on these uniform estimates, we…

偏微分方程分析 · 数学 2015-04-07 Jishan Fan , Fucai Li , Gen Nakamura

In this paper we rigorously justify the convergence of smooth solutions of the Navier-Stokes-Maxwell equations towards smooth solutions of the classical $2D$ parabolic MHD equations in the case of vanishing dielectric constant . The result…

偏微分方程分析 · 数学 2021-03-19 Donatella Donatelli , Stefano Spirito

We consider a general family of regularized Navier-Stokes and Magnetohydrodynamics (MHD) models on n-dimensional smooth compact Riemannian manifolds with or without boundary, with n greater than or equal to 2. This family captures most of…

偏微分方程分析 · 数学 2015-05-13 Michael Holst , Evelyn Lunasin , Gantumur Tsogtgerel

This paper establishes the local-in-time existence and uniqueness of solutions to the viscous, non-resistive magnetohydrodynamics (MHD) equations in $\mathbb{R}^d$, $d=2,3$, with initial data $B_0\in H^s(\mathbb{R}^d)$ and $u_0\in…

偏微分方程分析 · 数学 2016-09-21 Charles L. Fefferman , David S. McCormick , James C. Robinson , Jose L. Rodrigo

We consider here the magneto-hydrodynamics (MHD) equations on the whole space. For the 3D case, in the setting of the weighted $L^2$ spaces we obtain a weak-strong uniqueness criterion provided that the velocity field and the magnetic field…

偏微分方程分析 · 数学 2020-07-14 Pedro Gabriel Fernández-Dalgo , Oscar Jarrín

This paper deals with the derivation and analysis of the the Hall Magneto-Hydrodynamic equations. We first provide a derivation of this system from a two-fluids Euler-Maxwell system for electrons and ions, through a set of scaling limits.…

数学物理 · 物理学 2014-04-08 Marion Arichetogaray , Pierre Degond , Amic Frouvelle , Jian-Guo Liu

In this paper we analyze a method of to approximation for the weak solutions of the incompressible magnetohydrodynamic equations (MHD) in unbounded domains. In particular we describe an hyperbolic version of the so called artificial…

偏微分方程分析 · 数学 2012-10-18 Donatella Donatelli

We construct and study global solutions for the 3-dimensional incompressible MHD systems with arbitrary small viscosity. In particular, we provide a rigorous justification for the following dynamical phenomenon observed in many contexts:…

偏微分方程分析 · 数学 2016-03-29 Ling-Bing He , Li Xu , Pin Yu

The small data global well-posedness of the 3D incompressible Navier-Stokes equations in $\mathbb R^3$ with only one-directional dissipation remains an outstanding open problem. The dissipation in just one direction, say $\partial_1^2 u$ is…

偏微分方程分析 · 数学 2022-11-01 Hongxia Lin , Jiahong Wu , Yi Zhu

In this paper, we study a hydrodynamic system modeling the deformation of vesicle membranes in incompressible viscous fluids. The system consists of the Navier-Stokes equations coupled with a fourth order phase-field equation. In the three…

偏微分方程分析 · 数学 2013-02-26 Hao Wu , Xiang Xu

We prove the non-uniqueness of weak solutions to 3D magnetohydrodynamic (MHD for short) equations. The constructed weak solutions do not conserve the magnetic helicity and can be close to any given smooth, divergence-free and mean-free…

偏微分方程分析 · 数学 2022-02-16 Yachun Li , Zirong Zeng , Deng Zhang

Hall-MHD is a mixed hyperbolic-parabolic partial differential equation that describes the dynamics of an ideal two fluid plasma with massless electrons. We study the only shock wave family that exists in this system (the other…

等离子体物理 · 物理学 2015-06-17 George I. Hagstrom , Eliezer Hameiri

We establish the existence of axially symmetric weak solutions to steady incompressible magnetohydrodynamics with non-homogeneous boundary conditions. The key issue is the Bernoulli's law for the total head pressure $\Phi=\f 12(|{\bf…

偏微分方程分析 · 数学 2016-05-24 Shangkun Weng

We show that finite-energy weak solutions to the incompressible Navier--Stokes equations on a three-dimensional bounded smooth domain are regular up to the boundary, provided that the $L^4_tL^4_x$-norm of the solution is smaller than a…

偏微分方程分析 · 数学 2026-04-29 Siran Li

In this paper we show how the Smoothed Particle Hydrodynamics (SPH) equations for ideal magnetohydrodynamics (MHD) can be written in conservation form with the positivity of the dissipation guaranteed. We call the resulting algorithm…

天体物理学 · 物理学 2016-08-30 D. J. Price , J. J. Monaghan