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A generalised Grad-Shafranov equation that governs the equilibrium of an axisymmetric toroidal plasma with anisotropic pressure and incompressible flow of arbitrary direction is derived. This equation includes six free surface functions and…

等离子体物理 · 物理学 2016-03-23 A. Evangelias , G. N. Throumoulopoulos

Solutions of the linearized Vlasov-Poisson equations for the electric field radiated by a time varying point charge in a three-dimensional, unbounded, spatially homogeneous plasma with a uniform background magnetic field and a uniform…

等离子体物理 · 物理学 2015-06-04 John J. Podesta

We discuss a manifestly covariant formulation of ideal relativistic magnetohydrodynamics, which has been recently used in astrophysical and heavy-ion contexts, and compare it to other similar frameworks. We show that the covariant equations…

核理论 · 物理学 2018-11-14 Wojciech Florkowski , Avdhesh Kumar , Radoslaw Ryblewski

We make some remarks on reconnection in plasmas and want to present some calculations related to the problem of finding velocity fields which conserve magnetic flux or at least magnetic field lines. Hereby we start from views and…

天体物理学 · 物理学 2009-11-11 Dieter H. Nickeler , Hans-Joerg Fahr

The purpose of this work is to prove existence of a weak solution of the two dimensional incompressible Euler equations on a noncylindrical domain consisting of a smooth, bounded, connected and simply connected domain undergoing a…

偏微分方程分析 · 数学 2007-12-26 Flavia Z. Fernandes , Milton C. Lopes Filho

Extended magnetohydrodynamics (XMHD) is a fluid plasma model generalizing ideal MHD by taking into account the impact of Hall drift effects and the influence of electron inertial effects. XMHD has a Hamiltonian structure which has received…

偏微分方程分析 · 数学 2024-06-26 Christophe Cheverry , Nicolas Besse

The cat-eyes steady state solution in the framework of hydrodynamics describing an infinite row of identical vortices is extended to the magnetohydrodynamic equilibrium equation with incompressible flow of arbitrary direction. The extended…

等离子体物理 · 物理学 2009-01-19 G. N. Throumoulopoulos , H. Tasso , G. Poulipoulis

Starting from the given passive particle equilibrium particle cylindrical profiles, we built self-consistent stationary conditions of the Maxwell-Vlasov equation at thermodynamic equilibrium with non-flat density profiles. The solutions to…

等离子体物理 · 物理学 2019-09-19 Elias Laribi , Shun Ogawa , Guilhem Dif-Pradalier , Alexei Vasiliev , Xavier Garbet , Xavier Leoncini

Based on the Newton's second law and the Maxwell equations for the electromagnetic fields, we establish a new 3D incompressible magneto-hydrodynamics(MHD) equations for the motion of plasma under the standard Coulomb gauge. By using the…

偏微分方程分析 · 数学 2017-10-11 Ruikuan Liu , Jiayan Yang

Full self-consistent stationary Vlasov-Maxwell solutions of magnetically confined plasmas are built for systems with cylindrical symmetries. The stationary solutions are thermodynamic equilibrium solutions. These are obtained by computing…

等离子体物理 · 物理学 2023-01-04 Aurélien Cordonnier , Xavier Leoncini , Guilhem Dif-Pradalier , Xavier Garbet

We develop new variational principles to study stability and equilibrium of axisymmetric flows. We show that there is an infinite number of steady state solutions. We show that these steady states maximize a (non-universal) $H$-function. We…

流体动力学 · 物理学 2016-08-16 Nicolas Leprovost , Bérengère Dubrulle , Pierre-Henri Chavanis

We consider the initial-boundary value problem in the halfspace for the system of equations of ideal Magneto-Hydrodynamics with a perfectly conducting wall boundary condition. We show the convergence of solutions to the solution of the…

偏微分方程分析 · 数学 2024-07-04 Paolo Secchi

The standard equilibrium equation for magnetized plasma is extended to account for the magnetic polarization force. A factor of the pressure gradient arising from the magnetic decomposition of the Hall term survives the limit of vanishing…

等离子体物理 · 物理学 2011-04-29 Robert W. Johnson

In this paper we discuss the incompressible limit for multicomponent fluids in the isothermal ideal case. Both a direct limit-passage in the equation of state and the low Mach-number limit in rescaled PDEs are investigated. Using the…

偏微分方程分析 · 数学 2022-04-26 Pierre-Etienne Druet

We show that the solution of the free-boundary incompressible ideal magnetohydrodynamic (MHD) equations with surface tension converges to that of the free-boundary incompressible ideal MHD equations without surface tension given the…

偏微分方程分析 · 数学 2022-11-03 Xumin Gu , Chenyun Luo , Junyan Zhang

Context. Magnetized plasmas characterized by shearing flows are present in many natural contexts, such as the Earth's magnetopause and the solar wind. The collisionless nature of involved plasmas requires a kinetic description. When the…

等离子体物理 · 物理学 2021-01-27 Giovanni Guzzi , Adriana Settino , Francesco Valentini , Francesco Malara

We consider the periodic problem for two-fluid non-isentropic Euler-Maxwell systems in plasmas. By means of suitable choices of symmetrizers and an induction argument on the order of the time-space derivatives of solutions in energy…

偏微分方程分析 · 数学 2018-08-15 Yue-Hong Feng , Xin Li , Shu Wang

We obtain an exact solution of the self-consistent relativistic magnetohydrodynamic equations for an anisotropic magnetoactive plasma in the background of a plane gravitational wave metric (PGW) with an arbitrary polarization. It is shown…

广义相对论与量子宇宙学 · 物理学 2015-05-27 A. A. Agathonov , Yu. G. Ignatyev

Recent experiments have elucidated that novel nonequilibrium states inherent in the so-called hydrodynamic regime are realized in ultrapure metals with sufficiently strong momentum-conserving scattering. In this letter, we formulate a…

介观与纳米尺度物理 · 物理学 2021-12-21 Ryotaro Sano , Riki Toshio , Norio Kawakami

The study of the basic model for incompressible two-phase flows with phase transitions in the case of equal densities, initiated in the paper Pr\"uss, Shibata, Shimizu, and Simonett [16], is continued here with a stability analysis of…

偏微分方程分析 · 数学 2016-12-20 Jan Pruess , Gieri Simonett , Rico Zacher