A Comparison of Advanced Boiling Water Reactor Simulations between Serpent/CTF and Polaris/DYN3D: Steady State Operational Characteristics and Burnup Evolution

High fidelity modelling for nuclear power plant analysis is becoming more common due to advances in software and the availability of high-performance computers. However, design, develop regulate new light water reactors there are, up until now, limited requirements high methods already well-established computational being widely accepted. This article explores additional detail which can be obtained when using through Monte Carlo/Sub-channel compared industrial cross-section/nodal Advanced Boiling Water Reactor as a case study. study was chosen challenges two phase flow levels heterogeneity within fuel assembly design. The investigates how implement such an approach, from bottom-up procedure, by analysing each stage process.