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This paper focuses on an optimal error analysis of a fully discrete finite element scheme for the Cahn--Hilliard--magnetohydrodynamic (CH-MHD) system. The method use the standard inf-sup stable Taylor--Hood/MINI elements to solve the…

数值分析 · 数学 2025-06-17 Haiyan Su , Jilu Wang , Zeyu Xia , Ke Zhang

In this paper, we are concerned with the two-dimensional (2D) incompressible magnetohydrodynamic (MHD) equations with velocity dissipation given by $(-\Delta)^{\alpha}$ and magnetic diffusion given by reducing about logarithmic diffusion…

偏微分方程分析 · 数学 2023-03-31 Chao Deng , Zhuan Ye , Baoquan Yuan , Jiefeng Zhao

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

We present a divergence-free semi-implicit finite volume scheme for the simulation of the ideal magnetohydrodynamics (MHD) equations which is stable for large time steps controlled by the local transport speed at all Mach and Alfv\'en…

数值分析 · 数学 2024-03-08 Walter Boscheri , Andrea Thomann

We study the global well-posedness of magnetohydrodynamic (MHD) equations. The hydrodynamic system consists of the Navier-Stokes equations for the fluid velocity coupled with a reduced from of the Maxwell equations for the magnetic field.…

偏微分方程分析 · 数学 2019-08-09 Chengfei Ai , Zhong Tan , Jianfeng Zhou

We address the compressible magnetohydrodynamics (MHD) equations in $\mathbb{R}^3$ and establish a blow-up criterion for the local strong solutions in terms of the density only. Namely, if the density is away from vacuum ($\rho= 0$) and the…

偏微分方程分析 · 数学 2020-12-08 Anthony Suen

In this paper, we establish the non-uniqueness of solutions to the ideal magnetohydrodynamics equations in any dimension greater than three by proving the existence of infinitely many compactly supported weak solutions. In particular, these…

偏微分方程分析 · 数学 2026-03-03 Changxing Miao , Zhiwen Zhao

We present for astrophysical use a multi-dimensional numerical code to solve the equations for ideal magnetohydrodynamics (MHD). It is based on an explicit finite difference method on an Eulerian grid, called the Total Variation Diminishing…

天体物理学 · 物理学 2016-08-30 Dongsu Ryu , T. W. Jones , Adam Frank

We describe a numerical code to solve the equations for ideal magnetohydrodynamics (MHD). It is based on an explicit finite difference scheme on an Eulerian grid, called the Total Variation Diminishing (TVD) scheme, which is a…

天体物理学 · 物理学 2009-10-22 Dongsu Ryu , T. W. Jones

We prove the non-uniqueness of weak solutions to 3D magnetohydrodynamic (MHD for short) equations. The constructed weak solutions do not conserve the magnetic helicity and can be close to any given smooth, divergence-free and mean-free…

偏微分方程分析 · 数学 2022-02-16 Yachun Li , Zirong Zeng , Deng Zhang

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

We consider the three-dimensional magnetohydrodynamics (MHD) equations in the presence of a spatially degenerate stochastic forcing as a model for magnetostrophic turbulence in the Earth's fluid core. We examine the multi-parameter singular…

偏微分方程分析 · 数学 2016-04-22 Juraj Földes , Susan Friedlander , Nathan Glatt-Holtz , Geordie Richards

Two compressible immiscible fluids in 1D and in the isentropic approximation are considered. The first fluid is surrounded and in contact with the second one. As the Mach number of the first fluid vanishes, we prove the rigorous convergence…

偏微分方程分析 · 数学 2015-09-08 Rinaldo M. Colombo , Graziano Guerra

We are concerned with the study of the Cauchy problem to the 3D compressible Hall-magnetohydrodynamic system. We first establish the unique global solvability of strong solutions to the system when the initial data are close to a stable…

偏微分方程分析 · 数学 2018-06-08 Fuyi Xu , Meiling Chi , Lishan Liu , Yonghong Wu

We prove the global existence of the smooth solutions near equilibrium to the Cauchy problem of the incompressible non-resistive magnetohydrodynamic equations in the whole three dimensional space under some admissible condition. The result…

偏微分方程分析 · 数学 2023-10-17 Yuan Cai , Bin Han , Na Zhao

In this paper, we prove the global existence of smooth solutions to the three-dimensional incompressible magneto-hydrodynamical system with initial data close enough to the equilibrium state, $(e_3,0).$ Compared with the the previous works…

偏微分方程分析 · 数学 2015-11-11 Hammadi Abidi , Ping Zhang

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

In our earlier work \cite{DLL}, we have shown the global well-posedness of strong solutions to the three-dimensional primitive equations with the magnetic field (PEM) on a thin domain. The heart of this paper is to provide a rigorous…

偏微分方程分析 · 数学 2022-08-04 Lili Du , Dan Li

In this paper, we investigate the ideal magnetohydrodynamics (MHD) equations on tours $\TTT^d$. For $d=3$, we resolve the flexible part of Onsager-type conjecture for Els\"{a}sser energies of the ideal MHD equations. More precisely, for…

偏微分方程分析 · 数学 2025-04-09 Changxing Miao , Yao Nie , Weikui Ye

We study the vanishing Mach number limit for the stochastic Navier-Stokes equations with $\gamma$-type pressure laws, with focus on the one-dimensional case. We prove that, if the stochastic term vanishes with respect to the Mach number…

概率论 · 数学 2023-11-27 Gui-Qiang G. Chen , Michele Coti Zelati , Chin Ching Yeung
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