Analysis of Radioactive Effect in Molten Salt Reactor

Due to the flow characteristics of molten salt in molten salt reactor（MSR）,the internal physical processes of this reactor show strongly coupling characteristic.This paper studied the coupled neutronics-thermo-hydrodynamic and radiative heat transfer processes in MSR by using finite element method and discrete-ordinate method.The influences of radiation effect on internal temperature and flow fields are analyzed particularly.Simulation results show that although the radiation process has little effect on the flow process,the influence of radiation process on overall temperature can be very obvious.Therefore,in the design and the safety analysis of MSR,the influence of radiation effect cannot be neglected.