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相关论文: Elliptic and hyperelliptic magnetohydrodynamic equ…

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Recent results will be presented on steady states of magnetically confined plasmas obtained by conventional and Hamiltonian methods. The presentation consists of three parts. The first one concerns the derivation of a generalized…

等离子体物理 · 物理学 2018-07-11 A. Evangelias , D. A. Kaltsas , A. Kuiroukidis , P. J. Morrison , G. Poulipoulis , G. N. Throumoulopoulos

In this paper, we establish the mathematical validity of the Prandtl boundary layer theory for a class of nonlinear plane parallel flows of viscous incompressible magnetohydrodynamic (MHD) flow with no-slip boundary condition of velocity…

偏微分方程分析 · 数学 2021-03-17 Shijin Ding , Zhilin Lin , Dongjuan Niu

It was recently demonstrated that static, resistive, magnetohydrodynamic equilibria, in the presence of spatially-uniform electrical conductivity, do not exist in a torus under a standard set of assumed symmetries and boundary conditions.…

等离子体物理 · 物理学 2009-10-30 David Montgomery , Jason W. Bates , H. Ralph Lewis

We present an extension of the multi-region relaxed magnetohydrodynamics (MRxMHD) equilibrium model that includes plasma flow. This new model is a generalization of Woltjer's model of relaxed magnetohydrodynamics equilibria with flow. We…

等离子体物理 · 物理学 2014-04-04 G. R. Dennis , S. R. Hudson , R. L. Dewar , M. J. Hole

This article considers the ideal 2D magnetohydrodynamic equations on an infinite periodic channel close to a combination of an affine shear flow, called Couette flow, and a constant magnetic field. This setting combines important physical…

偏微分方程分析 · 数学 2025-04-03 Niklas Knobel

A general type of mathematical argument is described, which applies to all the cases in which dynamo maintenance of a steady magnetic field by motion in a uniform density is known to be impossible. Previous work has demonstrated that…

天体物理学 · 物理学 2007-05-23 A. Mangalam

We present new analytical three-dimensional solutions of the magnetohydrostatic equations, which are applicable to the co-rotating frame of reference outside a rigidly rotating cylindrical body, and have potential applications to planetary…

太阳与恒星天体物理 · 物理学 2017-11-13 Fiona Wilson , Thomas Neukirch

The magnetohydrodynamic (MHD) equations of incompressible viscous fluids with finite electrical conductivity describe the motion of viscous electrically conducting fluids in a magnetic field. In this paper, we find twelve families of…

数学物理 · 物理学 2009-08-26 Bintao Cao

By choosing appropriate deformed Maxwellian ion and electron distribution functions depending on the two particle constants of motion, i.e. the energy and toroidal angular momentum, we reduce the Vlasov axisymmetric equilibrium problem for…

等离子体物理 · 物理学 2015-08-12 Ap Kuiroukidis , G. N. Throumoulopoulos , H. Tasso

We consider the three-dimensional incompressible free-boundary magnetohydrodynamics (MHD) equations in a bounded domain with surface tension on the boundary. We establish a priori estimate for solutions in the Lagrangian coordinates with…

偏微分方程分析 · 数学 2021-04-30 Chenyun Luo , Junyan Zhang

The equilibrium magnetic field inside axisymmetric plasmas with inversions on the toroidal current density is studied. Structurally stable non-nested magnetic surfaces are considered. For any inversion in the internal current density the…

等离子体物理 · 物理学 2015-06-15 David Ciro , Iberê L. Caldas

We prove that smooth solutions of non-ideal (viscous and resistive) incompressible magnetohydrodynamic equations satisfy a stochastic law of flux conservation. This property involves an ensemble of surfaces obtained from a given, fixed…

等离子体物理 · 物理学 2015-05-13 Gregory L. Eyink

We present strategies based upon extremization principles, in the case of the axisymmetric equations of magnetohydrodynamics (MHD). We study the equilibrium shape by using a minimum energy principle under the constraints of the MHD…

流体动力学 · 物理学 2007-05-23 Nicolas Leprovost , Pierre-Henri Chavanis , Berengere Dubrulle

Stationary and axisymmetric solutions of relativistic rotating stars with strong mixed poloidal and toroidal magnetic fields are obtained numerically. Because of the mixed components of the magnetic field, the underlying stationary and…

高能天体物理现象 · 物理学 2014-11-13 Koji Uryu , Eric Gourgoulhon , Charalampos Markakis , Kotaro Fujisawa , Antonios Tsokaros , Yoshiharu Eriguchi

We consider a Hartmann layer, stationary flow of a viscose and resistive fluid between two plates with superimposed transverse magnetic field, in the limit of gyrotropic plasma, when viscosity across the field is strongly suppressed. For…

天体物理学 · 物理学 2009-11-13 Maxim Lyutikov

We consider the three-dimensional incompressible magnetohydrodynamics (MHD) equations in a bounded domain with small volume and free moving surface boundary. We establish a priori estimate for solutions with minimal regularity assumptions…

偏微分方程分析 · 数学 2022-07-05 Chenyun Luo , Junyan Zhang

We study the surface phase diagram of the three-dimensional kinetic Ising model below the equilibrium critical point subjected to a periodically oscillating magnetic field. Changing the surface interaction strength as well as the period of…

统计力学 · 物理学 2014-03-19 Keith Tauscher , Michel Pleimling

In this paper we consider the equations of the unsteady viscous, incompressible, and heat conducting magnetohydrodynamic flows in a bounded three-dimensional domain with Lipschitz boundary. By an approximation scheme and a weak convergence…

动力系统 · 数学 2014-04-22 Weiping Yan

The thermomagnetic convection of magnetic fluids in a cylindrical geometry subjected to a homogeneous magnetic field is studied. The study is motivated by a novel thermal instability [W. Luo et al., Phys. Rev. Lett. 82, 4134 (1999)]. As…

斑图形成与孤子 · 物理学 2009-11-07 Adrian Lange

The self-similar equilibrium models of self-gravitating, rotating, isothermal systems are investigated analytically. In these models the rotation velocity is constant and the density varies as $\frac{f(\theta, \phi)}{r^2}$, where $r$ and…

天体物理学 · 物理学 2009-11-06 Mohsen Shadmehri , Jamshid Ghanbari