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The cold ion limit of the local gyrokinetic model is rigorously taken to produce a nonlinear system of fluid equations that includes background flow shear. No fluid closure is required. By considering a simple slab geometry with magnetic…

等离子体物理 · 物理学 2019-05-13 Justin Ball , Stephan Brunner , Ben F. McMillan

We present a thermodynamic description of ultracold gases with dipolar interactions which properly accounts for the long-range nature and broken rotation invariance of the interactions. It involves an additional thermodynamic field…

量子气体 · 物理学 2025-07-16 Wilhelm Zwerger

We study by means of numerical simulations the model of dissipative particle dynamics with energy conservation for the simple case of thermal conduction. It is shown that the model displays correct equilibrium fluctuations and reproduces…

统计力学 · 物理学 2016-08-31 Marisol Ripoll , Pep Español , Matthieu H. Ernst

We continue our investigation of an inequality constraining the energy and potential enstrophy flux spectra in the two-layer quasi-geostrophic model. Its physical significance is that it can diagnose whether any given model that allows…

混沌动力学 · 物理学 2013-01-22 Eleftherios Gkioulekas

Gravitational and hydrodynamical perturbations are analysed in a relativistic plasma containing a mixture of interacting fluids characterized by a non-negligible bulk viscosity coefficient. The energy-momentum transfer between the…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Massimo Giovannini

We propose a solution to the long-standing short wavelength polarization closure shortfall of full-F gyro-fluid models. This is achieved by first finding an appropriate quadratic form of the gyro-fluid moment over the polarization part of…

等离子体物理 · 物理学 2020-03-03 Markus Held , Matthias Wiesenberger , Alexander Kendl

Elliptic flow holds much promise for studying the early-time thermalization attained in ultrarelativistic nuclear collisions. Flow measurements also provide a means of distinguishing between hydrodynamic models and calculations which…

核实验 · 物理学 2012-08-27 STAR collaboration

Acoustic perturbations in a parallel relativistic flow of an inviscid fluid are considered. The general expression for the frequency of the sound waves in a uniformly (with zero shear) moving medium is derived. It is shown that relativity…

天体物理学 · 物理学 2007-05-23 A. D. Rogava , V. I. Berezhiani , S. M. Mahajan

Low-frequency turbulence in magnetised plasmas is intrisically influenced by gyroscale effects across ion Larmor orbits. Here we show that fundamental vortex interactions like merging and co-advection in gyrofluid plasmas are essentially…

等离子体物理 · 物理学 2018-01-17 Alexander Kendl

We experimentally investigate the flow of a viscoelastic fluid in a parallel shear geometry at low Reynolds number. As the flow becomes unstable via a nonlinear subcritical instability, velocimetry measurements show non-periodic…

流体动力学 · 物理学 2017-07-26 Boyang Qin , Paulo E. Arratia

For the first time, we calculate the heating rate, attractive conservative and tangential dissipative fluctuation electromagnetic forces felt by a thick plate moving parallel to a closely spaced another plate in rest using the retarded…

其他凝聚态物理 · 物理学 2009-08-25 G. V. Dedkov , A. A. Kyasov

We study the transverse momentum ($p_T$) differential anisotropic flow and flow fluctuation in Pb+Pb collisions at $\sqrt{s_{NN}}$=5.02 TeV at the LHC. A (3+1)-dimensional CLVisc hydrodynamics framework with fluctuating TRENTO (or AMPT)…

高能物理 - 唯象学 · 物理学 2024-01-30 Jie Zhu , Xiang-Yu Wu , Guang-You Qin

We present hydrodynamic equations of compressible fluids in gravity as a generalization of those in the Boussinesq approximation used for nearly incompressible fluids. They account for adiabatic processes taking place throughout the cell…

软凝聚态物质 · 物理学 2009-11-07 Akira Furukawa , Akira Onuki

The derivation of electromagnetic gyrofluid equations is made systematic by using the Hermite polynomial form of the underlying delta-f gyrokinetic distribution function. The gyrokinetic free-energy functional is explicitly used to set up…

等离子体物理 · 物理学 2010-08-12 Bruce D. Scott

Fluctuations in the initial transverse energy-density distribution lead to anisotropic flows as observed in central high-energy heavy-ion collisions. Studies of longitudinal fluctuations of the anisotropic flows can shed further light on…

核理论 · 物理学 2015-04-24 Long-Gang Pang , Guang-You Qin , Victor Roy , Xin-Nian Wang , Guo-Liang Ma

Fluid dynamics corresponds to the dynamics of a substance in the long wavelength limit. Writing down all terms in a gradient (long wavelength) expansion up to second order for a relativistic system at vanishing charge density, one obtains…

高能物理 - 理论 · 物理学 2010-01-22 Paul Romatschke

We derive the leading dissipative corrections of holographic superfluids at finite temperature and chemical potential by employing our recently developed techniques to study dissipative effects in the hydrodynamic limit of holographic…

高能物理 - 理论 · 物理学 2022-11-30 Aristomenis Donos , Polydoros Kailidis

The micropolar fluid mechanics and its transport coefficients are derived from the linearized Boltzmann equation of rotating particles. In the dilute limit, as expected, transport coefficients relating to microrotation are not important,…

统计力学 · 物理学 2007-05-23 Hisao Hayakawa

We investigate an inequality constraining the energy and potential enstrophy flux in the two-layer quasi-geostrophic model. This flux inequality is unconditionally satisfied for the case of two-dimensional Navier-Stokes turbulence. However,…

混沌动力学 · 物理学 2013-01-22 Eleftherios Gkioulekas

Closed nonrelativistic (nonretarded) theory of conservative and dissipative electromagnetic forces and heat exchange between moving particles (nanoprobes) and a surface (flat and cylindrical) is reviewed. The formalism is based on methods…

介观与纳米尺度物理 · 物理学 2011-03-29 G. V. Dedkov , A. A. Kyasov