2010/04/30 by Bjoern Schenke, Sangyong Jeon, Charles Gale · 2 citations
Physics and Astronomy · #hep-ph #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.82.014903
published as Phys.Rev.C82:014903,2010 · 16 pages, 11 figures, version accepted for publication in PRC, references added, minor typos corrected, more detailed discussion of freeze-out routine added
arxiv created 2010/07/20 · arxiv updated 2014/11/20
We present MUSIC, an implementation of the Kurganov-Tadmor algorithm for relativistic 3+1 dimensional fluid dynamics in heavy-ion collision scenarios. This Riemann-solver-free, second-order, high-resolution scheme is characterized by a very small numerical viscosity and its ability to treat shocks and discontinuities very well. We also incorporate a sophisticated algorithm for the determination of the freeze-out surface using a three dimensional triangulation of the hyper-surface. Implementing a recent lattice based equation of state, we compute pT-spectra and pseudorapidity distributions for Au+Au collisions at root s = 200 GeV and present results for the anisotropic flow coefficients v2 and v4 as a function of both pT and pseudorapidity. We were able to determine v4 with high numerical precision, finding that it does not strongly depend on the choice of initial condition or equation of state.