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We prove non-uniqueness in law of the three-dimensional magnetohydrodynamics system that is forced by random noise of an additive and a linear multiplicative type and has viscous and magnetic diffusion, both of which are weaker than a full…

偏微分方程分析 · 数学 2021-09-16 Kazuo Yamazaki

We introduce a dispersion approximation of weak, entropy solutions of multidimensional scalar conservation laws using variational kinetic representation, where equilibrium densities satisfy the Gibb's entropy minimization principle for a…

偏微分方程分析 · 数学 2020-08-31 Misha Perepelitsa

We consider inviscid limits to shocks for viscous scalar conservation laws in one space dimension, with strict convex fluxes. We show that we can obtain sharp estimates in $L^2$, for a class of large perturbations and for any bounded time…

偏微分方程分析 · 数学 2015-02-04 Kyudong Choi , Alexis F. Vasseur

This work comes as the second part in a series of investigations into the dynamics of rotating waves as solutions to lattice dynamical systems. Such nonlinear waves as solutions to mathematical equations are of great interest throughout the…

动力系统 · 数学 2019-09-30 Jason J. Bramburger

This paper investigates the large-time behavior of the viscous shock profile for the one-dimensional system of viscoelasticity, subject to initial perturbations that approach space-periodic functions at far fields. We specifically address…

偏微分方程分析 · 数学 2025-07-30 Yu Mei , Peng Yuan

Astrophysical explosions are accompanied by the propagation of a shock wave through an ambient medium. Depending on the mass and energy involved in the explosion, the shock velocity $V$ can be non-relativistic ($V \ll c$, where $c$ is the…

高能天体物理现象 · 物理学 2019-08-07 Eric R. Coughlin

In this paper we develop an existence theory for small amplitude, steady, two-dimensional water waves in the presence of wind in the air above. The presence of the wind is modeled by a Kelvin--Helmholtz type discontinuity across the…

偏微分方程分析 · 数学 2012-11-15 Samuel Walsh , Oliver Bühler , Jalal Shatah

Starting from the Vlasov-Maxwell system, an exact relativistic hydrodynamic closure for a special type water bag distributions satisfying the Vlasov equation has been derived. It has been shown that the hydrodynamic equations are fully…

加速器物理 · 物理学 2011-10-18 Stephan I. Tzenov , Kiril B. Marinov

In this paper we show that the hydrodynamic problem for three-dimensional water waves with strong surface-tension effects admits a fully localised solitary wave which decays to the undisturbed state of the water in every horizontal…

偏微分方程分析 · 数学 2020-07-28 Boris Buffoni , Mark D. Groves , Shu-Ming Sun , Erik Wahlén

Under the hypothesis of small deformations, the equations of 1D elastodynamics write as a 2 x 2 hyperbolic system of conservation laws. Here, we study the Riemann problem for convex and nonconvex constitutive laws. In the convex case, the…

经典物理 · 物理学 2022-02-08 H Berjamin , B Lombard , G Chiavassa , N Favrie

In this paper, we prove the existence of smooth initial data for the two-dimensional free boundary incompressible viscous magnetohydrodynamics (MHD) equations, for which the interface remains regular but collapses into a splash singularity…

偏微分方程分析 · 数学 2023-10-17 Chengchun Hao , Siqi Yang

A free boundary problem for the one-dimensional compressible Navier-Stokes equations is investigated. The asymptotic stability of the viscous shock wave is established under some smallness conditions. The proof is given by an elementary…

偏微分方程分析 · 数学 2009-12-25 Feimin Huang , Xiaoding Shi , Yi Wang

Hydrodynamics predicts long-lived sound and shear waves. Thermal fluctuations in these waves can lead to the diffusion of momentum density, contributing to the shear viscosity and other transport coefficients. Within viscous hydrodynamics…

高能物理 - 唯象学 · 物理学 2011-08-04 Pavel Kovtun , Guy D. Moore , Paul Romatschke

Classical relativistic field theory is applied to perfect and magneto-hydrodynamic flows. The fields for Hamilton's principle are shown to be the Lagrangian coordinates of the fluid elements, which are potentials for the matter current…

综合物理 · 物理学 2007-05-23 Sylvan A. Jacques

In this paper, we prove the global existence and singularity formation for a wave system from modelling nematic liquid crystals in one space dimension. In our model, although the viscous damping term is included, the solution with smooth…

偏微分方程分析 · 数学 2012-07-24 Geng Chen , Yuxi Zheng

The object of this study is to investigate the effect of viscosity on propagation of free-surface waves in an incompressible viscous fluid layer of arbitrary depth. While we provide a more detailed study of properties of linear surface…

流体动力学 · 物理学 2019-09-06 Arash Ghahraman , Gyula Bene

In this paper we study small shocks of 1D scalar viscous conservation laws with uniformly convex flux and nonlinear dissipation. We show that such shocks are L2 stable independent of the strength of the dissipation, even with large…

偏微分方程分析 · 数学 2019-12-02 Logan Stokols

In this work, we study the stochastic thermodynamics of micro-magnetic systems. We first formulate the stochastic dynamics of micro-magnetic systems by incorporating noises into Landau-Lifshitz (LL) equation, which describes the…

统计力学 · 物理学 2024-08-06 Mingnan Ding , Jun Wu , Xiangjun Xing

The hydrodynamics of an ultrarelativistic flow, enclosed by a strong shock wave, are described by the well known Blandford-McKee solutions in spherical geometry. These solutions, however, become inaccurate at a distance $\sim R/2$ behind…

高能天体物理现象 · 物理学 2021-08-10 Tamar Faran , Re'em Sari

In this paper, the existence of finite-time splash singularity is proved for the free-boundary problem of the viscous and non-resistive incompressible magnetohydrodynamic (MHD) equations in $ \mathbb{R}^{3}$, based on a construction of a…

偏微分方程分析 · 数学 2023-09-19 Guangyi Hong , Tao Luo , Zhonghao Zhao