Authors: S. Okyay, D. Reger, V. C. Leite, E. Merzari, P. Balestra, G. Strydom
Year: 2016
Industry: Nuclear & SMR
Keywords: Use FSE, HTR, RCCS, Comparison
ABSTRACT
The very high temperature reactor (VHTR) has many safety features. One of these features is the reactor cavity cooling system (RCCS). This system is intended to remove decay heat from the reactor cavity during upset conditions. The Korea Atomic Energy Research Institute (KAERI) constructed a facility that represents a ¼ scale model of the RCCS of a VHTR. The preliminary testing on the facility has been completed and a simulation model has been set up for the facility, using the program GAMMA+. This study aims to simulate the facility using the 1D CFD program Flownex SE for comparison with the results obtained with GAMMA+. Since the fundamental equations used in both programs are the same, the results should show a high degree of correlation. The Flownex simulation was set up as close as possible to the GAMMA+ model by using the same geometry and initial- and boundary conditions.