Real-Time Simulation Model of PWR Core by Time-Space Separation Method

The method of simulation and modeling is studied for PWR core. Based on the method of separating the Time and Space variables, the neutron flux distributions are calculated from the 3D diffusion equations of two energy groups and six delayed neutron precursors, taking account of the following parameters effects on reactivity such as moderator density, boron concentration, xenon and samarium poisoning, control rod positions, moderator and fuel temperature, and fuel burn-up. The simulation algorithms and models are built on the STAR-90 simulation platform. The simulation results show that the computing speed is rapid and the model parameters are easy to adjust with time-space separation method.