CATHENA Simulation of Thermosiphoning in a Multiple-Channel Pressurized-Vater Test Facility

Abstract

The purpose of the work reported in this paper is to assess the ability of the computer code CATHENA to simulate the two-phase thermosiphoning behaviour of the RD-14M multiple-channel facility. This paper presents the CATHENA idealization of the RD-14M facility and briefly discusses some of the unique modelling features that were required to represent it. Simulation results are compared with experimental results, and it is demonstrated that CATHENA correctly simulates many of the events and phenomena, in particular bidirectional flow.