Speaker
Description
GUARDYAN (GpU Assisted Reactor Dynamic ANalysis) is a GPU-based dynamic Monte Carlo code developed at Budapest University of Technology and Economics. As an emerging calculation technology, dynamic Monte Carlo computes the neutron population evolution by calculating the direct time dependence of the neutron histories in multiplying systems. GUARDYAN targets to solve time-dependent problems related to fission reactors with the main focus on simulating and analyzing short transients. The key idea of GUARDYAN is a massively parallel execution structure making use of advanced programming possibilities available on CUDA enabled GPUs. The GUARDYAN has been recently coupled with SUBCHANFLOW subchannel thermal-hydraulics solver to carry out dynamic calculations with thermal-hydraulics feedback. The coupling is compared against other dynamic Monte Carlo-based neutron transport codes (SEPRENT, TRIPOLI-4) with SUNCHANFLOW coupling in TMI 3x3 transient scenario. The results of the comparison showed an exact match.
