Modeling the Dynamics of Heavy-Ion Collisions with a Hydrodynamic Model Using a Graphics Processor
| Autor: | Joanna Porter-Sobieraj, Marcin Słodkowski, Dominik Setniewski, Paweł Aszklar |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics and Astronomy (miscellaneous)
quark-gluon plasma marching cubes General Mathematics 01 natural sciences Stencil hypersurface Momentum High energy nuclear physics relativistic hydrodynamic 0103 physical sciences Computer Science (miscellaneous) Initial value problem simulation of heavy ion collisions freeze-out 010306 general physics Physics collective flow Large Hadron Collider Marching cubes 010308 nuclear & particles physics lcsh:Mathematics elliptic flow Elliptic flow high energy nuclear physics lcsh:QA1-939 Computational physics CUDA/GPU Chemistry (miscellaneous) Quark–gluon plasma |
| Zdroj: | Symmetry Volume 13 Issue 3 Symmetry, Vol 13, Iss 507, p 507 (2021) |
| ISSN: | 2073-8994 |
| DOI: | 10.3390/sym13030507 |
| Popis: | Dense bulk matter is formed during heavy-ion collision and expands towards a vacuum. It behaves as a perfect fluid, described by relativistic hydrodynamics. In order to study initial condition fluctuation and properties of jet propagation in dense hot matter, we assume a Cartesian laboratory frame with several million cells in a stencil with high-accuracy data volume grids. Employing numerical algorithms to solve hydrodynamic equations in such an assumption requires a lot of computing power. Hydrodynamic simulations of nucleus + nucleus interactions in the range of energies of the Large Hadron Collider (LHC) are carried out using our program, which uses Graphics Processing Units (GPUs) and Compute Unified Device Architecture (CUDA). In this work, we focused on transforming hydrodynamic quantities into kinetic descriptions. We implemented the hypersurface freeze-out conditions using marching cubes techniques. We developed freeze-out procedures to obtain the momentum distributions of particles on the hypersurface. The final particle distributions, elliptic flow, and higher harmonics are comparable to the experimental LHC data. |
| Databáze: | OpenAIRE |
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