基于JMCT的堆外核仪表系统刻度系数计算  

Calculation of Calibration Coefficient of RPN Based on JMCT

作　　者：付元光[1,2] 邓力 李刚[1] 张宝印[1] 李瑞[1,2] 王鑫[1,2] FU Yuanguang;DENG Li;LI Gang;ZHANG Baoyin;LI Rui;WANG Xin(Institute of Applied Physics and Computational Mathematics,Beijing 100088,China;CAEP Software Center for High Performance Numerical Simulation,Beijing 100088,China)

机构地区：[1]北京应用物理与计算数学研究所,北京100088 [2]中物院高性能数值模拟软件中心,北京100088

出　　处：《原子能科学技术》2018年第10期1780-1785,共6页Atomic Energy Science and Technology

基　　金：能源局重大专项子项资助项目(2015ZX06002008);国防科工局国防基础科研计划资助项目(C1520110002);国家磁约束核聚变能源研究专项资助项目(2015GB108002);NSFC-广东联合基金(第二期)超级计算科学应用专项资助项目(U1501501)

摘　　要：以三维蒙特卡罗粒子输运程序JMCT为主要数值模拟工具,计算了某反应堆多个运行循环下的堆外核仪表系统(RPN)功率量程刻度系数。使用直接蒙特卡罗模拟方法、响应矩阵方法和伴随蒙特卡罗方法,得到了多组RPN刻度系数,通过这些系数计算出不同工况下的堆芯功率水平和轴向功率差,并与实测值进行了比对。结果表明,3种方法所得计算值与实测值的偏差均满足工程精度要求,其中伴随蒙特卡罗方法计算开销最小,验证了通过蒙特卡罗数值模拟得到RPN刻度系数的可行性。Based on 3D Monte Carlo particle transport code JMCT,the RPN calibration coefficients of different operation cycles of a reactor were calculated.By adopting the direct Monte Carlo method,the response matrix method and the adjoint Monte Carlo method,sets of RPN calibration coefficients were obtained,which were further used to calculate the power level and the axial power difference of the reactor.The calculated values were compared with the experimental values.The results show that all the three methods can meet the accuracy needs in engineering,among which the adjoint Monte Carlo method has least computation cost.The feasibility of calculating RPN calibration coefficient by using Monte Carlo method was validated.

关 键 词：蒙特卡罗模拟 直接模拟 响应矩阵 伴随计算 RPN刻度系数 

分 类 号：TL329[核科学技术—核技术及应用]