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相关论文: On existence of resistive magnetohydrodynamic equi…

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A systematic study of energy conservation for extended magnetohydrodynamic (MHD) models that include Hall terms and electron inertia is performed. It is observed that commonly used models do not conserve energy in the ideal limit, i.e.,…

等离子体物理 · 物理学 2015-06-19 Keiji Kimura , P. J. Morrison

This paper focuses on the 3D incompressible magnetohydrodynamic (MHD) equations with mixed partial dissipation and magnetic diffusion. Our main result assesses the global stability of perturbations near the steady solution given by a…

偏微分方程分析 · 数学 2019-06-13 Jiahong Wu , Yi Zhu

We present the equations of relativistic hydrodynamics coupled to dynamical electromagnetic fields, including the effects of polarization, electric fields, and the derivative expansion. We enumerate the transport coefficients at leading…

高能物理 - 理论 · 物理学 2017-08-10 Juan Hernandez , Pavel Kovtun

We develop structure-preserving finite element methods for the incompressible, resistive Hall magnetohydrodynamics (MHD) equations. These equations incorporate the Hall current term in Ohm's law and provide a more appropriate description of…

数值分析 · 数学 2022-02-24 Fabian Laakmann , Patrick E. Farrell , Kaibo Hu

We study the two-dimensional generalized magnetohydrodynamics system with dissipation and diffusion in terms of fractional Laplacians. In particular, we show that in case the diffusion term has the power $\beta = 1$, in contrast to the…

偏微分方程分析 · 数学 2014-03-27 Kazuo Yamazaki

Using the initial-value formulation, a dynamic theory for systems evolving according to a Generalized Langevin Equation is developed, providing more restrictive conditions on the existence of equilibrium behavior and its…

统计力学 · 物理学 2024-03-11 Massimiliano Giona , Giuseppe Procopio , Chiara Pezzotti

The induction equation of kinematic magnetohydrodynamics is mathematically equivalent to a system of integral equations for the magnetic field in the bulk of the fluid and for the electric potential at its boundary. We summarize the recent…

流体动力学 · 物理学 2017-07-26 Frank Stefani , Mingtian Xu , Gunter Gerbeth , Thomas Wondrak

We study the global existence of classical solutions for two-dimensional incompressible MHD system with only magnetic diffusion. By using the time-weighted lower-order energy and uniformly bounded higher-order energy estimates, we prove the…

偏微分方程分析 · 数学 2023-10-27 Yuanyuan Qiao

We develop a new framework for the modelling of charged fluid dynamics in general relativity. The model, which builds on a recently developed variational multi-fluid model for dissipative fluids, accounts for relevant effects like the…

广义相对论与量子宇宙学 · 物理学 2017-05-31 N. Andersson , K. Dionysopoulou , I. Hawke , G. L. Comer

Equations describing plasma equilibria are derived from the total energy of the system. The MHD equilibrium is shown to hold even for systems where the magnetic field may locally vanish. Through conservation of helicity, confinement is…

等离子体物理 · 物理学 2019-06-20 John Hedditch

We study an anisotropic system arising in magnetohydrodynamics (MHD) in the whole space R^3 , in the case where there are no diffusivity in the vertical direction and only a small diffusivity in the horizontal direction (of size…

偏微分方程分析 · 数学 2017-08-15 Van-Sang Ngo

This article proposes a review of the analysis of the system of magnetohydrodynamics (MHD). First, we give an account of the modelling asumptions. Then, the results of existence of weak solutions, using the notion of renormalized solutions.…

偏微分方程分析 · 数学 2015-09-21 Xavier Blanc , Bernard Ducomet

The resistive magnetohydrodynamic (MHD) equations as usually defined in the quasineutral approximation refer to a system of 14 scalar equations in 14 scalar variables, hence are determined to be complete and soluble. These equations are a…

等离子体物理 · 物理学 2008-12-12 Robert W. Johnson

This paper establishes the local-in-time existence and uniqueness of strong solutions in $H^{s}$ for $s > n/2$ to the viscous, non-resistive magnetohydrodynamics (MHD) equations in $\mathbb{R}^{n}$, $n=2, 3$, as well as for a related model…

偏微分方程分析 · 数学 2014-01-21 C. L. Fefferman , D. S. McCormick , J. C. Robinson , J. L. Rodrigo

This work is devoted to the study of dissipative fluid systems, through the lens of a geometric variational formulation. Building upon previous works extending Hamilton's principle to non-equilibrium thermodynamics, the present method…

数学物理 · 物理学 2026-04-07 Bastien Manach-Pérennou , François Gay-Balmaz

The gap between a recently developed dynamical version of relaxed magnetohydrodynamics (RxMHD) and ideal MHD (IMHD) is bridged by approximating the zero-resistivity "Ideal" Ohm's Law (IOL) constraint using an augmented Lagrangian method…

等离子体物理 · 物理学 2022-02-23 R. L. Dewar , Z. S. Qu

A systematic theory of the asymptotic expansion of the magnetohydrodynamic (MHD) equilibrium in the distance from the magnetic axis is developed to include arbitrary smooth currents near the magnetic axis. Compared to the vacuum and the…

等离子体物理 · 物理学 2024-02-28 W. Sengupta , E. Rodriguez , R. Jorge , M. Landreman A. Bhattacharjee

In a recent paper, Phys. Rev E 81, 041137 (2010), the author attempts to derive ten necessary conditions for stability of dissipative fluids and plasmas. Assuming the validity of the local equilibrium principle, these criteria have been…

统计力学 · 物理学 2015-06-11 Giorgio Sonnino , Mustapha Tlidi , Jarah Evslin

We provide a statistical mechanical derivation of relativistic magnetohydrodynamics on the basis of the $(3+1)$-dimensional quantum electrodynamics; the system endowed with the magnetic one-form symmetry. The conservation laws and the…

高能物理 - 理论 · 物理学 2022-01-19 Masaru Hongo , Koichi Hattori

The equilibrium of a resistive axisymmetric plasma with purely toroidal flow surrounded by a conductor is investigated within the framework of the nonlinear magnetohydrodynamic theory. It is proved that a) the poloidal current density…

等离子体物理 · 物理学 2009-10-30 G. N. Throumoulopoulos