Validation of Moose's Subchannel Module Using the Areva Fctf Heated Bundle Benchmark

The SubChannel Module, referred to as SCM henceforward in this document, is a subchannel code within the Multiphysics Object-Oriented Simulation Environment (MOOSE) developed at the Idaho National Laboratory (INL). SCM, is able to model flow through liquid-metal cooled, wire-wrapped fuel pin sub-assemblies, situated a triangular lattice. This work extends the existing validation done for these flow types/geometries and introduces validation for the newly implemented capability to model flows within a deformed duct. The subchannel modeling approach was to reproduce the deformed duct effect on the geometric parameters of the boundary subchannels, meaning: surface area, wetted perimeter and gap. Then the model was validated using experimental data taken from Areva's fuel cooling test facility.