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In this paper we analyze a fully discrete scheme for a general Cahn-Hilliard equation coupled with a nonsteady Magneto-hydrodynamics flow, which describes two immiscible, incompressible and electrically conducting fluids with different…

数值分析 · 数学 2022-02-04 Hailong Qiu

We study a general convergence theory for the analysis of numerical solutions to the magnetohydrodynamic system describing the time evolution of compressible, viscous, electrically conducting fluids in space dimension d (= 2; 3). First, we…

偏微分方程分析 · 数学 2021-06-21 Yang Li , Bangwei She

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

We review recent progress in understanding nearly integrable models within the framework of generalized hydrodynamics (GHD). Integrable systems have infinitely many conserved quantities and stable quasiparticle excitations: when…

统计力学 · 物理学 2021-11-17 Alvise Bastianello , Andrea De Luca , Romain Vasseur

We study the Rayleigh-Taylor problem for two incompressible, immiscible, viscous magnetohydrodynamic (MHD) flows, with zero resistivity, surface tension (or without surface tenstion) and special initial magnetic field, evolving with a free…

综合数学 · 数学 2012-05-02 Fei Jiang , Song Jiang , Yanjin Wang

In this paper, we study the existence of weak solutions to a steady system that describes the motion of a micropolar electrorheological fluid. The constitutive relations for the stress tensors belong to the class of generalized Newtonian…

偏微分方程分析 · 数学 2021-12-16 Alex Kaltenbach , Michael Růžička

Using a modified WKB approach, we present a rigorous semi-classical analysis for solutions of nonlinear Schroedinger equations with rotational forcing. This yields a rigorous justification for the hydrodynamical system of rotating…

偏微分方程分析 · 数学 2010-09-03 Hailiang Liu , Christof Sparber

(Abridged) We consider dynamics and turbulent interaction of whistler modes within the framework of inertialess electron MHD (EMHD). We argue there is no energy principle in EMHD: any stationary closed configuration is neutrally stable. We…

等离子体物理 · 物理学 2013-11-27 Maxim Lyutikov

In this paper, we consider exterior problem of the critical semilinear wave equation in three space dimensions with variable coefficients and prove global existence of smooth solutions. Similar to the constant coefficients case, we show…

偏微分方程分析 · 数学 2012-03-08 Yi Zhou , Ning-An Lai

In this paper we consider the 2D Ericksen-Leslie equations which describes the hydrodynamics of nematic Liquid crystal with external body forces and anisotropic energy modeling the energy of applied external control such as magnetic or…

偏微分方程分析 · 数学 2020-05-18 Zdzislaw Brzezniak , Gabriel Deugoue , Paul Andre Razafimandimby

The present paper considers the full nonlinear dynamics of a homogeneous bubble inside an unbounded isentropic compressible inviscid liquid. This model is described by a free-boundary problem of compressible Euler equations with nonlinear…

偏微分方程分析 · 数学 2025-03-12 Liangchen Zou

We propose a result of global stability for the equations of homogeneous, incompressible magnetohydrodynamics (MHD) on a torus of any dimension $d \in \{2,3,...\}$, with positive viscosity and resistivity. This result applies to the…

偏微分方程分析 · 数学 2026-02-09 Livio Pizzocchero , Emanuele Tassi

In this article, we prove various illposedness results for the Cauchy problem for the incompressible Hall- and electron-magnetohydrodynamic (MHD) equations without resistivity. These PDEs are fluid descriptions of plasmas, where the effect…

偏微分方程分析 · 数学 2021-01-07 In-Jee Jeong , Sung-Jin Oh

The quantum dynamics of electron-nuclear systems is analyzed from the perspective of the exact factorization of the wavefunction, with the aim of defining gauge invariant equations of motion for both the nuclei and the electrons. For pure…

化学物理 · 物理学 2023-10-16 Rocco Martinazzo , Irene Burghardt

We show that the Fractional Quantum Hall Effect can be phenomenologically described as a special flow of a quantum incompressible Euler liquid. This flow consists of a large number of vortices of the same chirality. In this approach each…

强关联电子 · 物理学 2015-06-17 P. B. Wiegmann

The ideal magnetohydrodynamic equations are, roughly speaking, a quasi-linear symmetric hyperbolic system of PDEs, but not all the unknowns play the same role in this system. Indeed, in the regime of small magnetic fields, the equations are…

偏微分方程分析 · 数学 2021-03-01 Dimitri Cobb , Francesco Fanelli

For an Euler system, with dynamics generated by a potential energy functional, we propose a functional format for the relative energy and derive a relative energy identity. The latter, when applied to specific energies, yields relative…

偏微分方程分析 · 数学 2021-03-22 Jan Giesselmann , Corrado Lattanzio , Athanasios E. Tzavaras

We establish both global existence and decay properties for solutions with small data for a general class of coupled system of tensorial quasilinear hyperbolic wave equations in three space dimensions, that covers the dynamical Einstein…

偏微分方程分析 · 数学 2026-03-03 Sari Ghanem

The hydrodynamic description of probabilistic ballistic annihilation, for which no conservation laws hold, is an intricate problem with hard sphere-like dynamics for which no exact solution exists. We consequently focus on simplified…

统计力学 · 物理学 2007-05-23 Francois Coppex , Michel Droz , Emmanuel Trizac

I consider the problem of weakly nonlinear stability of three-dimensional convective magnetohydrodynamic systems, where there is no alpha-effect or it is insignificant, to perturbations involving large scales. I assume that the convective…

混沌动力学 · 物理学 2008-11-01 V. Zheligovsky