基于JSNT程序的压水堆屏蔽计算  

Shielding calculations of PWR using JSNT code

作　　者：张广春[1,2] 程汤培[1,2] 邓力[1,2] 郑征[3] 王晨琳[4] Zhang Guangchun Cheng Tangpei Deng li Zheng Zheng Wang Chenlin(Institute of Applied Physics and Computational Mathematics, Beijing 100094, China CAEP Software Center for High Performance Numerical Simulation, Beijing 100088, China Shanghai Nuclear Engineering Research and Design Institute, Shanghai 200233, China Nuclear Power Institute of China, Chengdu 610213, China)

机构地区：[1]北京应用物理与计算数学研究所,北京100094 [2]中国工程物理研究院高性能数值模拟软件中心,北京100088 [3]上海核工程研究设计院,上海200233 [4]中国核动力研究设计院,成都610213

出　　处：《强激光与粒子束》2017年第3期107-112,共6页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(91430218);能源局06专项资助项目(2015ZX06002008);国防科工局国防基础科研计划资助项目(C1520110002)

摘　　要：反应堆屏蔽计算是评估核电站安全性能的基础,是指导电站设计、运行的重要手段之一。JSNT程序是中物院高性能数值模拟软件中心研制的大规模并行离散纵标输运程序,具有较高的计算精度和计算效率。利用JSNT程序对某压水堆进行了建模计算,给出了中子通量密度的分布结果,并与实验测量值进行了对比。对比结果显示:无论是采用S_8计算还是S_(16)计算,计算结果都能满足工程要求;相比S_8而言,采用S_(16)计算可以显著提高计算精度,能够将某些测点处的相对误差降至1%以内。Reactor shielding calculations is the foundation for assessing nuclear plant safety performance. It is also an impor- tant method to provide guidelines for constructions and operations of nuclear plant. JSNT is a massively parallel discrete ordinates transport code developed by CAEP software center for high performance numerical simulation, with high simulation precision and efficiency. In this paper, a commercial PWR has been modeled and simulated using JSNT code. Flux distributions are obtained and compared with experimental measuring results. Comparisons show that results obtained by both S8 and S16 calculations could satisfy engineering demand. Moreover, in comparison to S8 calculation, S16 could improve the calculation precision significantly and decrease relative errors of some detectors under 1%.

关 键 词：屏蔽计算 SN方法 并行计算 求积组 

分 类 号：TL323[核科学技术—核技术及应用]