第36卷第3期 2016年6月
核科学与工程
Nuclear Science and Engineering
Vol.36No.3
Jun.2016
三维离散纵标方法在中国实验快堆堆芯
屏蔽计算中的应用王事喜，吴明宇，张强，杨勇，王凤龙（中国原子能科学研究院，快堆研究设计所，北京102413）
摘要：离散纵标(又称SN)方法是反应堆屏散计算中常用的方法，随着计算能力的发展和离散纵标计算方法的不断完善，使得离散纵标方法在反应堆的屏蔽计算中得到了广泛的应用。本文以中国实验快堆(CEFR)堆芯为研究对象，使用三维高散纵标方法对区域功率份额、组件功率、DPA、寿期内堆芯围板积分快中子注量及寿期内小栅板联箱积分快中子注量进行了计算研究，并与二维离散织标法和俄罗斯设计报告结果进行对比。研究结果表明三维离散纵标方法能够减少二维程序几何等效过程中导致的误
差，计算结果可靠，可应用于大型快堆堆芯的屏藏设计中。关键调：离散织标方法；DPA；积分快中子注量；屏蔽设计
中图分类号：TL3
文章标志码：A
文章编号：0258-0918(2016)03-0435-05
The shielding calculation for China Experiment Fast Reactor core
withthree-dimensionalSNmethod
WANG Shi-xi,WU Ming-yu,ZHANG Qiang,YANG Yong,WANG Feng-long
(China Institute of Atomic Energy, P. O. Box 275-95,Beijing 102413,China)
Abstract: Discrete ordinates(SN)method is the most widely used method for reactor shielding calculation, As the fast development of calculation capacity and consummation of three-dimensional(3-D) SN method,it is mature for 3-D SN method to be used for reactor shielding design for nuclear facilities. This work was done specifically for China Experiment Fast Reactor(CEFR) core model. The fuel assembly power fraction,the power of assemblyDPA,the integral fast neutron fluence of boarding and header throttle structure in life were calculated by 3-D SN method.These results were compared with two-dimensional (2-D) SN method and Russia design report. The research result show that the 3-D SN method can reduce the discrepancy during the model equivalence,the result is reliable, and can be utilized to shielding design for large scale fast reactors core.
修回日期：2016-02-17
作者简介：王事喜（1983一)，男，湖南郡阳人，助理研究员，硕士，核能科学与工程专业
435