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We exhibit blow-up conditions for the gravity water-waves equations in any dimension and in domains with arbitrary bottoms. We follow the method by Alazard, Burq and Zuily of using a paradifferential reduction of the equations and derive…

偏微分方程分析 · 数学 2014-07-28 Thibault de Poyferré

The shock wave structure in a one-dimensional lattice (e.g. granular chain) with a power law dependence of force on displacement between particles with viscous dissipation is considered and compared to the corresponding long wave…

软凝聚态物质 · 物理学 2015-06-25 E. B. Herbold , V. F. Nesterenko

Shockwaves provide a useful and rewarding route to the nonequilibrium properties of simple fluids far from equilibrium. For simplicity, we study a strong shockwave in a dense two-dimensional fluid. Here, our study of nonlinear transport…

流体动力学 · 物理学 2020-03-24 Wm. G. Hoover , Carol G. Hoover

Employing a kinetic framework, we calculate all transport coefficients for relativistic dissipative (second-order) hydrodynamics for arbitrary particle masses in the 14-moment approximation. Taking the non-relativistic limit, it is shown…

核理论 · 物理学 2025-05-07 Semyon Potesnov , David Wagner

The condition of linear instability for a converging cylindrical strong shock wave (SW) in an arbitrary viscous medium is obtained in the limit of a large stationary SW radius, when it is possible to consider the same Rankine-Hugoniot jump…

流体动力学 · 物理学 2020-11-03 Sergey G. Chefranov

Dispersive shock waves (DSWs) of the defocusing radial nonlinear Schr\"odinger (rNLS) equation in two spatial dimensions are studied. This equation arises naturally in Bose-Einstein condensates, water waves and nonlinear optics. A unified…

斑图形成与孤子 · 物理学 2018-07-19 Mark J. Ablowitz , Justin T. Cole , Igor Rumanov

We prove the existence and uniqueness of weak solutions of the three dimensional compressible magnetohydrodynamics (MHD) equations. We first obtain the existence of weak solutions with small $L^2$-norm which may display codimension-one…

偏微分方程分析 · 数学 2020-11-12 Anthony Suen

Based on recent papers, we discuss the formulation of the first-order relativistic spin magnetohydrodynamics (MHD) with the totally antisymmetric spin current and properties of the anisotropic linear waves awaken near an equilibrium…

高能物理 - 唯象学 · 物理学 2024-11-01 Zhe Fang , Koichi Hattori , Jin Hu

We investigate non-contraction of large perturbations around intermediate entropic shock waves and contact discontinuities for the three-dimensional planar compressible isentropic magnetohydrodynamics (MHD). To do that, we take advantage of…

偏微分方程分析 · 数学 2015-10-09 Moon-Jin Kang

We construct a new Godunov type relativistic hydrodynamics code in Milne coordinates, using a Riemann solver based on the two-shock approximation which is stable under the existence of large shock waves. We check the correctness of the…

核理论 · 物理学 2017-07-18 Kazuhisa Okamoto , Yukinao Akamatsu , Chiho Nonaka

In this paper we investigate the dispersive properties of the solutions of the two dimensional water-waves system. First we prove Strichartz type estimates with loss of derivatives at the same low level of regularity we were able to…

偏微分方程分析 · 数学 2010-02-02 Thomas Alazard , Nicolas Burq , Claude Zuily

As a shock front interacts with turbulence, it develops corrugation which induces outgoing wave modes in the downstream plasma. For a fast shock wave, the incoming wave modes can either be fast magnetosonic waves originating from…

高能天体物理现象 · 物理学 2016-08-17 M. Lemoine , O. Ramos , L. Gremillet

Hydrodynamic behavior is a general feature of interacting systems with many degrees of freedom constrained by conservation laws. To date hydrodynamic scaling in relativistic quantum systems has been observed in many high energy settings,…

高能物理 - 唯象学 · 物理学 2009-11-07 Luis M. A. Bettencourt , Fred Cooper , Karen Pao

In this paper, we consider suitable weak solutions of the four dimensional incompressible magneto-hydrodynamic equations. We give two different kind $\varepsilon$-regularity criteria. One only requires the smallness of scaling $L^{p,q}$…

偏微分方程分析 · 数学 2014-05-20 Xumin Gu

We show that interfacial gravity waves comprising strong hydraulic jumps (bores) can be described by a two-layer hydrostatic shallow-water (SW) approximation without invoking additional front conditions. The theory is based on a new SW…

流体动力学 · 物理学 2023-04-25 Jānis Priede

In this paper, we investigate the hydrodynamic limit of rarefaction wave for the two-species Vlasov-Maxwell-Landau(VML) system with Coulomb potential. We prove that for any given time interval, the solution of the Vlasov-Maxwell-Landau…

偏微分方程分析 · 数学 2026-02-26 Guanghui Wang , Lingda Xu , Tong Yang , Mingying Zhong

We investigate analytically the magnetic instability in a rotating and electrically conducting fluid induced by an imposed magnetic field with its associated electric current. The short-wavelength approximation is used in the linear…

地球与行星天体物理 · 物理学 2013-08-22 Xing Wei

We derive a relativistic magnetohydrodynamics (RMHD) theory for a dilute electron-ion gas governed by the Boltzmann-Vlasov equation, using the method of moments. This yields an extended MHD framework beyond standard astrophysical…

高能天体物理现象 · 物理学 2025-11-14 Khwahish Kushwah , Gabriel S. Denicol

We provide rigorous criteria to determine whether the non-hydrodynamic sector of a relativistic kinetic theory is gapless. These general criteria apply to both Boltzmann's equation and approximate models thereof, provided that the latter…

核理论 · 物理学 2024-11-15 Lorenzo Gavassino

Linear stability of a plane shock waves in ultrarelativistic anisotropic hydrodynamics is investigated. The properties of the amplitudes of perturbations of physical quantities are studied depending on the components of the wave vector of a…

核理论 · 物理学 2023-09-21 Aleksandr Kovalenko