The Models Used in Predicting Steam Condensation Occurs during Nuclear Reactor Loss of Coolant Accident

Abstract

The aim of the present study is to review and compare between the methodologies used for modeling condensation with non-condensable, in a two-phase flows channel. The important state-of-the art numerical algorithms for the solution of multi-phase conservation equations are reviewed. The methodology for modeling condensation in these algorithms is based on the stagnant film theory. The methodology used in RELAP5/MOD3 was the most accurate model because it rigorously treats the coupling between the heat and mass transfer processes, and the gas-liquid interphase without iteration.