Prediction of Pebble Motion in Pebble Bed Reactors Using Monte Carlo Molecular Dynamics Simulation, invited, , Mark Mills Award Winner

摘要

A statistical approach of pebble's distribution in the PBR has been demonstrated. From the time scaling factors, the PBR can be evolved systematically as the design module associated with pebble flow. This simulation is accomplished by dividing into two parts. The first part simulates the dropping of pebbles into the PBR with a closed exit that allows one to obtain the correct placement of all pebbles within the pebble bed. The second part simulates what happens when the PBR exit is opened and normal pebble flow begins. Using this approach the pebble piling up and subsequent discharge are monitored.