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相关论文: On existence of resistive magnetohydrodynamic equi…

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We introduce an effective action for non-dissipative magnetohydrodynamics. A crucial guiding principle is the generalized global symmetry of electrodynamics, which naturally leads to introducing a "dual photon" as the degree of freedom…

高能物理 - 理论 · 物理学 2018-11-13 Paolo Glorioso , Dam Thanh Son

The exact law for fully developed homogeneous compressible magnetohydrodynamics (CMHD) turbulence is derived. For an isothermal plasma, without the assumption of isotropy, the exact law is expressed as a function of the plasma velocity…

等离子体物理 · 物理学 2017-11-29 Nahuel Andrés , Fouad Sahraoui

General equations for conservative yet dissipative (entropy producing) extended magnetohydrodynamics are derived from two-fluid theory. Keeping all terms generates unusual cross-effects, such as thermophoresis and a current viscosity that…

流体动力学 · 物理学 2020-10-09 Baptiste Coquinot , Philip J. Morrison

A main result of this paper establishes the global stability of the 3D MHD equations with mixed partial dissipation near a background magnetic field in the domain $\Omega=\mathbb{T}^2\times\mathbb{R}$ with $\mathbb{T}^2=[0, 1]^2$. More…

偏微分方程分析 · 数学 2024-02-05 Xuemin Deng , Yuelong Xiao , Aibin Zang

A theory of dissipative generalized continuum mechanics is presented in the framework of weakly nonlocal non-equilibrium thermodynamics. The evolution equation of microdeformation is obtained by thermodynamic principles. Conditions of…

经典物理 · 物理学 2013-01-01 P. Ván

The magnetohydrodynamic equations system for heavy fluid over an arbitrary surface in shallow water approximation is studied in the present paper. It is shown that simple wave solutions exist only for underlying surfaces that are slopes of…

流体动力学 · 物理学 2015-05-27 Kirill Karelsky , Arakel Petrosyan , Stepan Tarasevich

Lie symmetries for ordinary differential equations are studied. In systems of ordinary differential equations, there do not always exist non-trivial Lie symmetries around equilibrium points. We present a necessary condition for existence of…

动力系统 · 数学 2009-11-07 Y. Hirata , K. Imai

We prove the existence of a generalization of Kelvin's circulation theorem in general relativity which is applicable to perfect isentropic magnetohydrodynamic flow. The argument is based on a new version of the Lagrangian for perfect…

广义相对论与量子宇宙学 · 物理学 2022-10-12 Jacob D. Bekenstein , Asaf Oron

This paper presents a global stability result on perturbations near a background magnetic field to the 2D incompressible magnetohydrodynamic (MHD) equations with only magnetic diffusion on the periodic domain. The stability result provides…

偏微分方程分析 · 数学 2024-02-16 Xiaoping Zhai

An extension of the H-theorem for dissipative particle dynamics (DPD) to the case of a multi-component fluid is made. Detailed balance and an additional H-theorem are proved for an energy-conserving version of the DPD algorithm. The…

统计力学 · 物理学 2009-10-31 C. A. Marsh , P. V. Coveney

Written with respect to an appropriate Poisson structure, a partially integrable Hamiltonian system is viewed as a completely integrable system with parameters. Then, the theorem on quasi-periodic stability in Ref. [1] (the KAM theorem) can…

动力系统 · 数学 2007-05-23 G. Sardanashvily

Hydrodynamic equations (HDEQs) are derived which describe spatio-temporal evolutions of the electron temperature and the chemical potential of two-dimensional systems in strong magnetic fields in states with large diagonal resistivity…

介观与纳米尺度物理 · 物理学 2009-11-07 Hiroshi Akera

Starting with the generalized electromagnetic field equations of dyons, we have discussed the theory of magnetohydrodynamics (MHD) of plasma for particles carrying simultaneously the electric and magnetic charges (namely dyons). It is shown…

高能物理 - 理论 · 物理学 2010-03-16 P. S. Bisht , Pushpa , O. P. S. Negi

We demonstrate, both at the Newtonian and (general) relativistic levels, the existence of a generalization of Kelvin's circulation theorem (for pure fluids) which is applicable to perfect magnetohydrodynamics. The argument is based on the…

天体物理学 · 物理学 2009-10-31 Jacob D. Bekenstein , Asaf Oron

Necessary and/or sufficient conditions are studied for the existence, uniqueness and holonomicity of bases in which on sufficiently general subsets of a differentiable manifold the components of derivations of the tensor algebra over it…

微分几何 · 数学 2007-05-23 Bozhidar Z. Iliev

We present a criterion for a shock wave existence in relativistic magnetic hydrodynamics with an arbitrary (possibly non-convex) equation of state. The criterion has the form of algebraic inequality that involves equation of state of the…

天体物理学 · 物理学 2007-05-23 V. I. Zhdanov , P. V. Tytarenko , M. S. Borshch

The necessary and sufficient condition of separability of a mixed state of any systems is presented, which is practical in judging the separability of a mixed state. This paper also presents a method of finding the disentangled…

量子物理 · 物理学 2009-11-07 Ping-Xing Chen , Lin-Mei Liang , Cheng-Zu Li , Ming-Qiu Huang

We establish the existence, uniqueness and exponential attraction properties of an invariant measure for the MHD equations with degenerate stochastic forcing acting only in the magnetic equation. The central challenge is to establish time…

概率论 · 数学 2020-03-17 Xuhui Peng , Jianhua Huang , Yan Zheng

In this paper, we are concerned with the initial boundary values problem associated to the compressible viscous non-resistive and heat-conducting magnetohydrodynamic flow, where the magnetic field is vertical. More precisely, by exploiting…

偏微分方程分析 · 数学 2024-08-15 Xiaoping Zhai , Yongsheng Li , Yajuan Zhao

Due to the absence of dissipation mechanism to the inviscid compressible systems, it is a challenging problem to prove their global solvability. In this paper, we are concerned with the initial-boundary value problem to the inviscid and…

偏微分方程分析 · 数学 2025-08-20 Jinkai Li , Liening Qiao