Simulating Molten Fuel-Moderator Interactions with the Code MC3D

Abstract

The code MC3D was used to simulate a set of molten fuel-moderator interactions experiments associated with a single channel pressure tube failure. The code CATHENA was used to determine the discharge characteristics and input parameters for the water and steam at the location of the pressure tube failure. Despite some of the limitations of the code MC3D, simulations of the pressure pulses generated from the break qualitatively agreed with the experimentally measured values.