The development of fast simulation program for marine reactor parameters

The fast simulation program for marine reactor parameters is developed based on the Simulink simulating software according to the characteristics of marine reactor with requirement of maneuverability and acute and fast response. The simplified core physical and thermal model, pressurizer model, steam generator model, control rod model, reactivity model and the corresponding Simulink modules are established. The whole program is developed by coupling all the Simulink modules. Two typical transient processes of marine reactor with fast load increase at low power level and load rejection at high power level are adopted to verify the program. The results are compared with those of Relap5/Mod3.2 with good consistency, and the program runs very fast. It is shown that the program is correct and suitable for the fast and accurate simulation of marine reactor parameters on the operating field, which is significant to the marine reactor safe operation.

► The simplified physical and mathematical models are proposed for a marine reactor system.
► A program is developed with Simulink module and Matlab file.
► The program developed has the merit of easy input preparation, output processing and fast running.
► The program can be used for the fast simulation of marine reactor parameters on the operating field.