MODELING OF THERMAL-COUPLES' MEASUREMENTS AT CORE EXIT OF REACTOR VVER-1000 WITH THE COUPLED SYSTEM CODE ATHLET-BIPR-VVER
17th Symposium of AER on VVER Reactor Physics and Reactor Safety (2007, Yalta, Crimea (Ukraine, back then))
REACTOR DYNAMICS, THERMAL HYDRAULICS AND SAFETY ANALYSIS
Abstract
The aim of the performed study is to find a reliable correlation between the measured thermocouples values at core outlet of reactor VVER-1000 with the coolant temperatures at the assemblies? outlets at these positions. Firstly, the solution is related with the correct interpretation of the measured results, and secondly with the correct modelling of the coolant flow at the location of the measuring device. Studies have been performed with the system coupled code ATHLET/BIPR-VVER, which allows to model the thermal-hydraulics and kinetics processes in VVER reactors in a 3D manner.