SIMULATION MODELING FOR DYNAMIC PERFORMANCE STUDIES IN A CHANNEL MODEL OF A SUPERCRITICAL-PRESSURE, DIRECT CYCLE LIGHT-WATER REACTOR

Dynamic performance studies in a channel model of a supercritical-pres sure, direct-cycle light water reactor is carried out in this paper. I n this supercritical-pressure system where some parameters are tempera ture dependent within the channel, neutronic and thermal-hydraulic cal culations are carried out to define the distributions of heat transfer coefficient and power generated along the supercritical channel model . A linearized mathematical nodal model representing the heat transfer system is given for the supercritical channel. A digital-analogue sim ulation technique is used to study the dynamic performance of the chan nel model from the transient response of the fuel and coolant temperat ures at different nodes in the supercritical channel model. Transient responses are displayed for different modes of perturbation of the sys tem. Copyright (C) 1996 Elsevier Science Ltd