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相关论文: Simulating elliptic flow with viscous hydrodynamic…

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A systematic study is presented for centrality, transverse momentum ($p_T$) and pseudorapidity ($\eta$) dependence of the inclusive charged hadron elliptic flow ($v_2$) at midrapidity($|\eta| < 1.0$) in Au+Au collisions at $\sqrt{s_{NN}}$ =…

核实验 · 物理学 2012-11-19 STAR collaboration

This work shows how the early stages of perturbation growth in a viscosity-stratified flow are different from those in a constant-viscosity flow, and how nonlinearity is a crucial ingredient. We derive the viscosity-varying adjoint…

流体动力学 · 物理学 2021-01-27 Ritabrata Thakur , Arjun Sharma , Rama Govindarajan

Recent differential measurements of elliptic flow are used to probe several hydrodynamic scaling predictions. Eccentricity scaling is observed for Cu+Cu and Au+Au collisions at $\sqrt{s_{NN}}=~200$ GeV, suggesting essentially complete…

核实验 · 物理学 2007-05-23 Michael Issah , Arkadij Taranenko

Recent discussions of RHIC data emphasized the exciting possibility that the matter produced in nucleus-nucleus collisions shows properties of a near-perfect fluid. Here, we aim at delineating the applicability of fluid dynamics, which is…

高能物理 - 唯象学 · 物理学 2008-11-26 Rudolf Baier , Paul Romatschke , Urs Achim Wiedemann

We present a systematic study of elliptic flow as a function of centrality, pseudorapidity, transverse momentum and energy for Cu+Cu and Au+Au collisions from the PHOBOS experiment. New data on elliptic flow in Cu+Cu collisions at 22.4 GeV…

核实验 · 物理学 2019-08-14 Rachid Nouicer

We present inclusive charged hadron elliptic flow v_2 measured over the pseudorapidity range |\eta| < 0.35 in Au+Au collisions at sqrt(s_NN) = 200 GeV. Results for v_2 are presented over a broad range of transverse momentum (p_T = 0.2-8.0…

核实验 · 物理学 2010-05-12 PHENIX Collaboration , A. Afanasiev

Solutions of the forced Navier-Stokes equation have been conjectured to thermalize at scales larger than the forcing scale, similar to an absolute equilibrium obtained for the spectrally-truncated Euler equation. Using direct numeric…

流体动力学 · 物理学 2017-11-15 Alexandre Cameron , Alexandros Alexakis , Marc-Étienne Brachet

We study the effects of bulk viscosity on p_T spectra and elliptic flow in heavy ion collisions at RHIC. We argue that direct effect of the bulk viscosity on the evolution of the velocity field is small, but corrections to the freezeout…

核理论 · 物理学 2015-06-11 Thomas Schaefer , Kevin Dusling

Elliptic flow ($v_2$) fluctuations in central heavy-ion collisions are direct probes of the fluctuating geometry of the quark-gluon plasma, and, as such, are strongly sensitive to any deviation from spherical symmetry in the shape of the…

核理论 · 物理学 2019-03-05 Giuliano Giacalone

In this proceedings, we review the basics of quasiparticle anisotropic hydrodynamics (aHydroQP). Thenwe present phenomenological comparisons between 3+1d quasiparticle anisotropic hydrodynamics and experimental data from RHIC experiments at…

高能物理 - 唯象学 · 物理学 2018-11-06 Mubarak Alqahtani , Dekrayat Almaalol , Michael Strickland

The matter created in relativistic heavy ion collisions is fairly well described by ideal hydrodynamics, and somewhat better described by viscous hydrodynamics. To this point, most viscous calculations have been two-dimensional, based on an…

核理论 · 物理学 2015-06-04 Joshua Vredevoogd , Scott Pratt

We study a generalization of the Navier-Stokes-Fourier system for an incompressible fluid where the deviatoric part of the Cauchy stress tensor is related to the symmetric part of the velocity gradient via a maximal monotone 2-graph that is…

偏微分方程分析 · 数学 2017-05-02 Erika Maringová , Josef Žabenský

The effects of initial state fluctuations on elliptic flow are investigated within a (3+1)d Boltzmann + hydrodynamics transport approach. The spatial eccentricity ($\epsilon_{\rm RP}$ and $\epsilon_{\rm part}$) is calculated for initial…

核理论 · 物理学 2010-05-28 Hannah Petersen , Marcus Bleicher

Based on the (3+1)-dimensional hydrodynamic model, the space-time evolution of hot and dense nuclear matter produced in non-central relativistic heavy-ion collisions is discussed. The elliptic flow parameter v_2 is obtained by Fourier…

核理论 · 物理学 2007-05-23 Tetsufumi Hirano

With a Yang-Mills field, stratified shear flow initial state and a high resolution (3+1)D Particle-in-Cell Relativistic (PICR) hydrodynamic model, we calculate the $\Lambda$ polarization for peripheral Au+Au collisions at RHIC energy of…

高能物理 - 唯象学 · 物理学 2020-02-19 Yilong Xie , Dujuan Wang , Laszlo Pal Csernai

Hadron spectra and elliptic flow in relativistic heavy-ion collisions are studied in event-by-event (3+1)D ideal hydrodynamic simulations with fluctuating initial conditions given by the AMPT Monte Carlo model. Both the coherent soft gluon…

核理论 · 物理学 2015-06-12 Longgang Pang , Qun Wang , Xin-Nian Wang

In 2nd order causal dissipative theory, space-time evolution of QGP fluid is studied in 2+1 dimensions. Relaxation equations for shear stress tensors are solved simultaneously with the energy-momentum conservation equations. Comparison of…

核理论 · 物理学 2007-08-01 A. K. Chaudhuri

Brenner has recently proposed modifications to the Navier-Stokes equations that are based on theoretical arguments but supported only by experiments having a fairly limited range. These modifications relate to a diffusion of fluid volume…

流体动力学 · 物理学 2009-11-13 Christopher J. Greenshields , Jason M. Reese

In this paper, we study a hydrodynamical system modeling the deformation of vesicle membrane under external incompressible viscous flow fields. The system is in the Eulerian formulation and is governed by the coupling of the incompressible…

偏微分方程分析 · 数学 2013-01-30 Jihong Zhao , Qiao Liu

We report the first measurement of charged particle elliptic flow in Pb-Pb collisions at 2.76 TeV with the ALICE detector at the CERN Large Hadron Collider. The measurement is performed in the central pseudorapidity region (|$\eta$|<0.8)…

核实验 · 物理学 2017-10-02 ALICE Collaboration
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