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相关论文: Remarks on the global regularity of two-dimensiona…

200 篇论文

In recent years, the global existence of classical solutions to the Cauchy problem for 2D incompressible viscous MHD equations without magnetic diffusion has been proved in \cite{Ren,TZhang}, under the assumption that initial data is close…

偏微分方程分析 · 数学 2025-05-22 Shijin Ding , Ronghua Pan , Yi Zhu

We present a systematic method for constructing two-dimensional magnetohydrodynamic equilibria with compressible flow in Cartesian geometry. This systematic method has already been developed in spherical geometry and applied in modelling…

天体物理学 · 物理学 2009-11-07 Gordon Petrie , Nektarios Vlahakis , Kanaris Tsinganos

We consider the three-dimensional magnetohydrodynamics system forced by random noise. First, for smooth solutions in the ideal case, the cross helicity remains invariant while the magnetic helicity precisely equals the initial magnetic…

偏微分方程分析 · 数学 2024-10-04 Kazuo Yamazaki

This paper studies the nonlinear evolution of magnetic field turbulence in proximity of steady ideal MHD configurations characterized by a small electric current, a small plasma flow, and approximate flux surfaces, a physical setting that…

等离子体物理 · 物理学 2024-09-12 Naoki Sato , Michio Yamada

The GENERIC structure allows for a unified treatment of different discrete models of hydrodynamics. We first propose a finite volume Lagrangian discretization of the continuum equations of hydrodynamics through the Voronoi tessellation. We…

统计力学 · 物理学 2007-05-23 Mar Serrano , Pep Español

We construct self-adjoint Laplacians and symmetric Markov semigroups on hyperbolic attractors, endowed with Gibbs $u$-measures. If the measure has full support, we can also conclude the existence of an associated symmetric diffusion…

动力系统 · 数学 2022-01-24 Shayan Alikhanloo , Michael Hinz

The paper describes a new upwind conservative numerical scheme for special relativistic resistive magnetohydrodynamics with scalar resistivity. The magnetic field is kept approximately divergence free and the divergence of the electric…

天体物理学 · 物理学 2009-11-13 S. S. Komissarov

This work extends the applications of Anderson-type Hamiltonians to include transport characterized by anomalous diffusion. Herein, we investigate the transport properties of a one-dimensional disordered system that employs the discrete…

数学物理 · 物理学 2020-03-06 J. L. Padgett , E. G. Kostadinova , C. D. Liaw , K. Busse , L. S. Matthews , T. W. Hyde

We consider a two-dimensional MHD model describing the evolution of viscous, compressible and electrically conducting fluids under the action of vertical magnetic field without resistivity. Existence of global weak solutions is established…

偏微分方程分析 · 数学 2019-07-02 Yang Li , Yongzhong Sun

The equilibrium theory of the 2D magnetohydrodynamic equations is derived, accounting for the full infinite hierarchies of conserved integrals. An exact description in terms of two coupled elastic membranes emerges, producing long-ranged…

流体动力学 · 物理学 2015-06-11 Peter B. Weichman

We study the global existence and uniform-in-time bounds of classical solutions in all dimensions to reaction-diffusion systems dissipating mass. By utilizing the duality method and the regularization of the heat operator, we show that if…

偏微分方程分析 · 数学 2019-05-28 Brian P. Cupps , Jeff Morgan , Bao Quoc Tang

Using a combined analytical/molecular dynamics (MD) approach, we study the current fluctuation spectra and longitudinal and transverse collective mode dispersions of the classical two-dimensional (point) dipole system (2DDS) characterized…

等离子体物理 · 物理学 2015-05-19 Kenneth I. Golden , Gabor J. Kalman , Peter Hartmann , Zoltan Donko

This work investigates the existence and uniqueness of local weak solutions for the d-dimensional $(d \geq 2)$ fractional magnetic B\'enard system without thermal diffusion, integrating the B\'enard equation and MHD system. For $\kappa = 0$…

偏微分方程分析 · 数学 2024-09-27 Anis Rahmani , Abdelaziz Mennouni

We are concerned with the uniform regularity estimates of solutions to the two dimensional compressible non-resistive magnetohydrodynamics (MHD) equations with the no-slip boundary condition on velocity in the half plane. Under the…

偏微分方程分析 · 数学 2021-08-31 Xiufang Cui , Shengxin Li , Feng Xie

We analyse the universal properties of nonequilibrium steady states of driven Magnetohydrodynamic (MHD) turbulence in three dimensions (3d). We elucidate the dependence of various phenomenologically important dimensionless constants on the…

统计力学 · 物理学 2009-11-10 Abhik Basu

At the zero temperature limit, a one-dimensional steady solution to the hydrodynamic equation of a U(2) invariant superfluid is obtained. This solution reveals that the magnitude of magnetization is always directly proportional to the…

量子气体 · 物理学 2025-04-03 Guang-Xin Pang , Yi-Cai Zhang

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

We study the one-dimensional, longitudinally boost-invariant motion of an ideal fluid with infinite conductivity in the presence of a transverse magnetic field, i.e., in the ideal transverse magnetohydrodynamical limit. In an extension of…

核理论 · 物理学 2016-04-27 Shi Pu , Victor Roy , Luciano Rezzolla , Dirk H. Rischke

A good compromise between the resistive model and the PIC model is Aristotelian electrodynamics, which can include the back-reaction of the radiative photons onto particle motion and allow for a local dissipation where the force-free…

高能天体物理现象 · 物理学 2020-02-28 Gang Cao , Xiongbang Yang

This paper concerns the Cauchy problem of the two-dimensional (2D) nonhomogeneous incompressible Magnetohydrodynamic (MHD) equations with vacuum as far field density. We establish the global existence and uniqueness of strong solutions to…

偏微分方程分析 · 数学 2017-08-08 Boqiang Lv , Zhonghai Xu , Xin Zhong