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We discuss the procedure for the exact solution of the Riemann problem in special relativistic magnetohydrodynamics (MHD). We consider both initial states leading to a set of only three waves analogous to the ones in relativistic…

广义相对论与量子宇宙学 · 物理学 2009-11-11 B. Giacomazzo , L. Rezzolla

The initial conditions of one-dimensional expanding viscous fluids in relativistic heavy-ion collisions are scrutinized in terms of nonlinear causality of the relativistic hydrodynamic equations. Conventionally, it is believed that the…

核理论 · 物理学 2025-02-03 Tau Hoshino , Tetsufumi Hirano

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 consider a new variant of cosmological perturbation theory that has been designed specifically to include non-linear density contrasts on scales 100 Mpc, while still allowing for linear fluctuations on larger scales. This theory is used…

广义相对论与量子宇宙学 · 物理学 2019-04-08 Christopher S. Gallagher , Timothy Clifton

A detailed derivation of the Lattice Boltzmann (LB) scheme for relativistic fluids recently proposed in Ref. [1], is presented. The method is numerically validated and applied to the case of two quite different relativistic fluid dynamic…

太阳与恒星天体物理 · 物理学 2010-12-28 M. Mendoza , B. M. Boghosian , H. J. Herrmann , S. Succi

Starting with the relativistic Boltzmann equation where the collision term is generalized to include nonlocal effects via gradients of the phase-space distribution function, and using Grad's 14-moment approximation for the distribution…

核理论 · 物理学 2013-05-23 Amaresh Jaiswal , Rajeev S. Bhalerao , Subrata Pal

The dynamic world model and its linear perturbations were first studied in Einstein's gravity. In the system without pressure the relativistic equations coincide exactly with the later known ones in Newton's gravity. Here we prove that,…

广义相对论与量子宇宙学 · 物理学 2009-11-10 J. Hwang , H. Noh

The quantum hydrodynamic-like equations for two real variables (i.e., the phase and the amplitude of the wave function) of the relativistic Klein-Gordon equation are derived in the present paper. The paper also shows that in classical limit…

量子物理 · 物理学 2015-09-22 Piero Chiarelli

Relativistic dissipative hydrodynamics including hydrodynamic fluctuations is formulated by putting an emphasis on non-linearity and causality. As a consequence of causality, dissipative currents become dynamical variables and noises…

核理论 · 物理学 2013-04-12 Koichi Murase , Tetsufumi Hirano

The recently proposed connection between the Lorentz invariance of stability and the speed of signal propagation has been tested for a first-order relativistic dissipative hydrodynamic theory. The fact that the stability situation in…

核理论 · 物理学 2023-02-15 Rajesh Biswas , Sukanya Mitra , Victor Roy

We consider the two-dimensional water-wave problem with a general non-zero vorticity field in a fluid volume with a flat bed and a free surface. The nonlinear equations of motion for the chosen surface and volume variables are expressed…

偏微分方程分析 · 数学 2024-09-04 Delia Ionescu-Kruse , Rossen Ivanov

High frequency limit for most of wave phenomena is known as quasiclassical limit or ray optics limit. Propagation of waves in this limit is described in terms of wave fronts and rays. Wave front is a surface of constant phase whose points…

微分几何 · 数学 2007-05-23 Ruslan Sharipov

We study the (local) propagation of plane waves in a relativistic, non-dissipative, two-fluid system, allowing for a relative velocity in the "background" configuration. The main aim is to analyze relativistic two-stream instability. This…

广义相对论与量子宇宙学 · 物理学 2010-11-29 L. Samuelsson , C. S. Lopez-Monsalvo , N. Andersson , G. L. Comer

Hydrodynamic forces acting on a neutrally-buoyant spherical particle immersed in a wall-bounded axisymmetric stagnation point flow (Hiemenz-Homann flow) are predicted, based on a suitable form of the reciprocal theorem. An approximate…

流体动力学 · 物理学 2020-11-24 Jacques Magnaudet , Micheline Abbas

We develop first-principles theory of relativistic fluid turbulence at high Reynolds and P\'eclet numbers. We follow an exact approach pioneered by Onsager, which we explain as a non-perturbative application of the principle of…

流体动力学 · 物理学 2018-02-21 Gregory L. Eyink , Theodore D. Drivas

The novel hydrodynamic model of plasmas with the relativistic temperatures consisted of four equations for the material fields: the concentration and the velocity field \emph{and} the average reverse relativistic $\gamma$ functor and the…

等离子体物理 · 物理学 2021-08-03 Pavel A. Andreev

In this paper, we aim to address several important issues about the recently developed lattice Boltzmann (LB) model for relativistic hydrodynamics [M. Mendoza et al., Phys. Rev. Lett. 105, 014502 (2010); Phys. Rev. D 82, 105008 (2010)].…

计算物理 · 物理学 2012-11-15 Q. Li , K. H. Luo , X. J. Li

We explore a new action formulation of hyperfluids, fluids with intrinsic hypermomentum. Brown's Lagrangian for a relativistic perfect fluid is generalised by incorporating the degrees of freedom encoded in the hypermomentum tensor, namely…

广义相对论与量子宇宙学 · 物理学 2024-04-12 Damianos Iosifidis , Tomi S. Koivisto

The nonlinear coupling between spacetime geometry and matter in the early Universe remains a frontier in theoretical cosmology. By introducing a novel gravitomagnetic-hydrodynamic framework, we reveal a fundamental analogy between…

广义相对论与量子宇宙学 · 物理学 2025-10-28 Jiaxiang Liang , Peng Xu , Minghui Du , Yifu Cheng , Zhan Wang , Ziren Luo , Manjia Liang

Wave resonance is the fundamental mechanism of non-linear instabilities of fluid flows, and affects the long-time evolution of fluid motions and other physical problems described by non-linear differential equations. Some significant…

数学物理 · 物理学 2011-04-08 Lun-Shin Yao