Thermal-Hydraulic Simulation Analysis of SVBR-100 Lead Bismuth Cooled Reactor
In order to study the thermal-hydraulic characteristics and control scheme of the lead-bismuth reactor,after the thermal-hydraulic program RELAP5 is correctly expanded and transformed,the object model of the lead-bismuth reactor is established,and the simulation characteristics of the model under steady-state and transient condi-tions are analyzed.The simulation results show that the steady-state calculation results are consistent with the design values.The transient calculation results are consistent with physical principles and empirical knowledge.Compared with the water reactor in a transient state,the results show that the reactivity and nuclear power parameters of the lead-bismuth reactor change less and stabilize faster,and the stability time of core temperature and fuel surface tempera-ture is shorter,indicating that compared with the water reactor,the lead-bismuth reactor has better self-stability and self-regulation characteristics,which makes it have more development potential.
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