An adaptive mesh, GPU-accelerated, and error minimized special relativistic hydrodynamics code

ABSTRACT We present a new special relativistic hydrodynamics (SRHD) code capable of handling coexisting ultra-relativistically hot and non-relativistically cold gases. achieve this by designing algorithm for conversion between primitive conserved variables in the SRHD solver, which incorporates realistic ideal-gas equation state covering both non-relativistic regimes. The can handle problems involving Lorentz factor as high 106 optimally avoid catastrophic cancellation. In addition, we have integrated solver into gamer (https://github.com/gamer-project/gamer) to support adaptive mesh refinement hybrid OpenMP/MPI/GPU parallelization. It achieves peak performance 7 × 107 cell updates per second on single Tesla P100 GPU scales well 2048 GPUs. apply two interesting astrophysical applications: (a) an asymmetric explosion source blast wave (b) flow acceleration limb brightening jets.