Error Analysis of Supercritical Water Correlations Using ATHLET System Code For Low and Moderate Mass Flux Cases

Abstract

The thermal-hydraulic computer code ATHLET (Analysis of THermal-hydraulics of LEaks and Transients) is used for analysis of anticipated and abnormal plant transients, including safety analysis of Light Water Reactors (LWRs), Russian Graphite-Moderated High Power Channel-type Reactors (RBMKs) and SuperCritical Water-cooled Reactors (SCWRs). Efforts are being made to study the supercritical phenomena both analytically and experimentally. In this work, a numerical model was created in ATHLET to represent a supercritical water experimental test section and the ability of the code to predict the inside-wall temperature of the test section for low and moderate mass flux ranges was assessed.