Simulation Research under Accident Condition of Space Nuclear Reactor
With the development of China's aerospace industry,space nuclear reactor power supply has become an ideal power source for future space exploration due to its high power density,long life,strong environmental adaptabili-ty and stable working performance.In order to study the safety of space nuclear reactor under normal operating condi-tions and falling accident conditions,this paper conducted critical simulation research on space nuclear reactor based on neutron transport calculation program OpenMC,and obtaind a series of important parameters such as reactor core reactivity,control drum value and fuel depletion calculation under normal operating conditions.At the same time,the core reactivity and neutron energy spectrum of the space nuclear reactor under two accident conditions of flooding and sand burial were simulated and analyzed.The results show that the space nuclear reactor still has about 3000pcm neg-ative reactivity to prevent the reactor to reach the critical state under the normal drop accident condition of the control drum function,which ensures the safety of the space nuclear reactor under this accident condition,and indicates that the core design is safe and reliable.The simulation research of space nuclear reactor has certain guiding significance for the practical application of space nuclear reactor in China in the future.The calculation results in this paper pro-vide important reference data for the safety analysis and accident analysis of space nuclear reactors.
Space nuclear reactorNeutron transport calculation programAccident conditionSimulation calcula-tion
NETL
NSTL
万方数据
维普
