# Optimized fluid dynamics for heavy ion collisions

## TL;DR

This paper discusses the development and application of viscous anisotropic hydrodynamics for simulating the quark-gluon plasma in heavy ion collisions, showing improved performance over traditional viscous hydrodynamics in complex 3D scenarios.

## Contribution

It introduces an efficient 3D simulation framework for viscous anisotropic hydrodynamics and compares its performance to accelerated viscous hydrodynamics simulations.

## Key findings

- Anisotropic hydrodynamics outperforms viscous hydrodynamics in complex scenarios.
- GPU-accelerated simulations enable faster 3D modeling.
- Results demonstrate improved accuracy in describing quark-gluon plasma evolution.

## Abstract

The (viscous) anisotropic hydrodynamic approach, especially after perturbative inclusion of all residual viscous terms, has been shown to dramatically outperform viscous hydrodynamics in several simplified situations for which exact solutions exist but which share with realistic expansion scenarios the problem of large dissipative currents. We will report on the present status of applying viscous anisotropic hydrodynamics in a highly efficient simulation of the full three-dimensional quark-gluon plasma. Results from accelerated $3{+}1$-dimensional viscous hydrodynamic simulations using graphics processing units will be compared to the anisotropic frameworks.