【作者】 张良； 江新标； 杨宁； 陈立新； 朱养妮； 刘文旭；

【Author】 Zhang Liang;Jiang Xin-biao;Yang Ning;Chen Li-xin;Zhu Yang-ni;Liu Wen-xu;State Key Laboratory of Intense Pulsed Radiation Simulation an Effect,Northwest Institute of Nuclear Technology;

【机构】 强脉冲辐射环境模拟与效应国家重点实验室西北核技术研究所；

【摘要】 周期性脉冲快堆采用旋转反射层引入周期性变化的反应性,从而产生周期性变化的功率。采用蒙特卡罗方法模拟其动态特性需要考虑瞬态过程和移动几何。基于开源蒙特卡罗软件OpenMC,开发了瞬态过程模拟功能和动几何处理功能。在基准反应堆上采用OpenMC计算了中子通量密度的变化,和MCNP的计算结果符合一致。在周期性脉冲快堆模型上模拟计算了中子通量密度变化,其变化特点和周期性脉冲快堆的物理特性符合一致。更多还原

【Abstract】 The fast periodic pulsed reactor utilizes rotating reflectors to introduce periodic varying reactivity,which makes the core generate continuous power pulses at a certain frequency.The transient process and moving geometry should be considered if the Monte Carlo method is used to simulate the dynamic characteristics.Based on the open source Monte Carlo software OpenMC,the transient process simulation function and the moving geometry processing function are developed.The variation of neutron flux density on the benchmark reactor is calculated,and the result is in good agreement with that of MCNP.The variation of neutron flux density is simulated on a fast periodic pulsed reactor model,and is consistent with the physical characteristics of this kind of reactor.更多还原