SPORTS-M Prediction of the Transient Behaviour in a MAPLE Heat Transfer Test Facility

Abstract

SPORTS-M is a computer code developed to perform steady-state and transient thermalhydraulic analyses of two-phase flow in a piping network. To provide a database to develop heat transfer and void fraction correlations pertinent to the finned fuel in a MAPLE reactor, experiments have been conducted in a singlepin heat transfer test facility. A loss-of-secondary-side-cooling accident was simulated in the facility and SPORTS-M was used to predict the sheath temperatures during this transient. The results show the heat transfer correlations in SPORTS-M provide a conservative prediction of the wall temperature for the entire transient. when an equivalent sheath-mass pin radius is used in the fuel conduction model.