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Recently linear dissipative models of the Boltzmann equation have been introduced. In this work, we consider the problem of constructiing suitable hydrodynamic approximations for such models where the mean velocity and the temperature of…

偏微分方程分析 · 数学 2007-05-23 Stephane Brull , Lorenzo Pareschi

We explore the relationship between mechanical systems describing the motion of a particle with the mechanical systems describing a continuous medium. More specifically, we will study how the so-called intermediate integrals or fields of…

数学物理 · 物理学 2020-07-15 Ricardo J. Alonso-Blanco

We review some recent developments in mathematical aspects of relativistic fluids. The goal is to provide a quick entry point to some research topics of current interest that is accessible to graduate students and researchers from adjacent…

偏微分方程分析 · 数学 2024-10-29 Marcelo M. Disconzi

We study the GENERIC hydrodynamic theory for relativistic liquids formulated by Ottinger and collaborators. We use the maximum entropy principle to derive its conditions for linear stability (in an arbitrary reference frame) and for…

广义相对论与量子宇宙学 · 物理学 2023-03-16 Lorenzo Gavassino , Marco Antonelli

Recent works have revealed that matching conditions play a major role on general consistency properties of relativistic fluid dynamics such as causality, stability and wellposedness of the equations of motion. In this paper we derive…

核理论 · 物理学 2021-12-08 Gabriel S. Rocha , Gabriel S. Denicol

We develop a purely hydrodynamic formalism to describe collisional, anisotropic instabilities in a relativistic plasma, that are usually described with kinetic theory tools. Our main motivation is the fact that coarse-grained models of high…

高能物理 - 唯象学 · 物理学 2017-01-04 Esteban Calzetta , Alejandra Kandus

A thermodynamically consistent particle-based model for fluid dynamics with continuous velocities and a non-ideal equation of state is presented. Excluded volume interactions are modeled by means of biased stochastic multiparticle…

软凝聚态物质 · 物理学 2009-11-11 Thomas Ihle , Erkan Tuzel , Daniel M. Kroll

We consider general relativistic magnetohydrodynamics from a charged multifluids point-of-view, taking a variational approach as our starting point. We develop the case of two charged components in detail, accounting for a phenomenological…

太阳与恒星天体物理 · 物理学 2015-06-04 N. Andersson

This article deals with the issues of global-in-time existence and asymptotic analysis of a fluid-particle interaction model in the so-called bubbling regime. The mixture occupies the physical space $\Omega \subset \mathbb{R}^3$ which may…

偏微分方程分析 · 数学 2010-06-16 Jose A. Carrillo , Trygve Karper , Konstantina Trivisa

A classical (non-quantum-mechanical) relativistic ideal gas in thermodynamic equilibrium in a uniformly accelerated frame of reference is studied using Gibbs's microcanonical and grand canonical formulations of statistical mechanics. Using…

经典物理 · 物理学 2015-05-20 Domingo J. Louis-Martinez

We present exact, analytic and simple solutions of relativistic perfect fluid hydrodynamics. The solutions allow us to calculate the rapidity distribution of the particles produced at the freeze-out, and fit them to the measured rapidity…

核理论 · 物理学 2008-11-26 M. Csanad , M. I. Nagy , T. Csorgo

We analyze the effects of thermal conduction in a relativistic fluid just after its departure from spherical symmetry, on a time scale of the order of relaxation time. Using first order perturbation theory, it is shown that, as in spherical…

广义相对论与量子宇宙学 · 物理学 2008-11-26 L. Herrera , A. Di Prisco , J. Martinez

An approach to construction of static models is demonstrated for a fluid ball. Five examples are considered. Two of them are exact solutions of the Einstein equations; the other three are connected with the Airy special functions, the…

广义相对论与量子宇宙学 · 物理学 2017-08-23 Alexandre M. Baranov

A general organizing principle is proposed that can be used to derive the equations of motion describing the near-equilibrium dynamics of causal and thermodynamically stable relativistic systems. The latter are found to display some new…

核理论 · 物理学 2024-06-04 Lorenzo Gavassino , Marcelo M. Disconzi , Jorge Noronha

The exact nonequilibrium time evolution of the momentum distribution for a finite many particle system in one dimension with a linear energy dispersion coupled to optical phonons is presented. For distinguishable particles the influence…

凝聚态物理 · 物理学 2007-05-23 K. Schoenhammer , C. Woehler

In this paper, we design and analyze a Virtual Element discretization for the steady motion of non-Newtonian, incompressible fluids. A specific stabilization, tailored to mimic the monotonicity and boundedness properties of the continuous…

数值分析 · 数学 2024-03-07 P. F. Antonietti , L. Beirao da Veiga , M. Botti , G. Vacca , M. Verani

The shear viscosity is a fundamental transport property of matter. Here we derive a general theory of the viscosity of gases based on the relativistic Langevin equation (deduced from a relativistic Lagrangian) and nonaffine linear response…

高能物理 - 唯象学 · 物理学 2024-11-08 Alessio Zaccone

The internal layers of neutron stars are expected to contain several superfluid components that can significantly affect their dynamics. The description of such objects should rely on hydrodynamic models in which it is possible to…

广义相对论与量子宇宙学 · 物理学 2020-01-14 Lorenzo Gavassino , Marco Antonelli

The stability of shear flows of electrically conducting fluids, with respect to finite amplitude three-dimensional localized disturbances is considered. The time evolution of the fluid impulse integral, characterizing such disturbances, for…

流体动力学 · 物理学 2016-09-08 V. Levinski , I. Rapoport , J. Cohen

In this introductory review article, we explore the special relativistic equations of particle motions and the consequent derivation of Einstein's famous formula $E=mc^2$. Next, we study the special relativistic electromagnetic field…

数学物理 · 物理学 2007-05-23 A. Das , A. DeBenedictis , S. Kloster , N. Tariq