Pin-by-pin堆芯计算栅元少群参数处理程序PINCK的研发  

Development of Pin Parameters Processing Program PINCK for Pin-by-Pin Core Calculation

作　　者：马党伟 芦韡[1] 马永强[1] 郑勇 涂晓兰[1] 贺涛 陈定勇[1] MA Dangwei;LU Wei;MA Yongqiang;ZHENG Yong;TU Xiaolan;HE Tao;CHEN Dingyong(Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu 610213,China)

机构地区：[1]中国核动力研究设计院核反应堆系统设计技术重点实验室,成都610213

出　　处：《现代应用物理》2023年第1期103-109,共7页Modern Applied Physics

基　　金：稳定支持科研计划资助项目(WDZC-BXJS-19-05-007)。

摘　　要：接口处理程序在反应堆物理“两步法”计算中起着连接组件计算和堆芯计算的桥梁作用,是反应堆物理计算中不可或缺的重要环节。为实现pin-by-pin堆芯计算,将栅元均匀化的截面参数提供给堆芯程序,设计开发了栅元少群参数处理程序PINCK。PINCK程序首先对不同分支的栅元参数进行预处理,得到不同分支的参数分量;然后,通过对参数分量进行关于状态变量的插值计算,得到参数分量的插值系数,即栅元参数库。通过对不同格式栅元参数库大小的比较,选择二进制格式作为栅元参数库的输出格式。通过分析程序计算时间,使用OpenMP对程序热点模块进行加速,16线程时,并行效率大于70%。通过使用压水堆组件对PINCK程序进行初步验证,表明PINCK程序的理论模型合理,计算结果正确。Interface processing program plays a role of bridge between lattice calculation and core calculation in the two-step method of reactor physics,and it is an indispensable link of the reactor physics calculation.To realize pin-by-pin core calculation and provide core calculation code with the pin-cell homogenized parameters,a pin parameters processing program PINCK is designed and developed.PINCK first preprocesses the pin-cell homogenized parameters of different branches and gets the parameters components of different branches.Then,by solving the linear equation system about the state variables with the parameters components,the interpolation coefficients of the parameters components are obtained,that is,pin parameter library.By comparing the size of pin parameter library in different formats,binary format is selected as the output format of pin parameter library.By analyzing the calculation time of PINCK,the hotspot module is accelerated by using OpenMP,and the 16-thread parallel efficiency is up to 70%.Preliminary verification of PINCK by using PWR lattices proves that the theoretical model of PINCK is reasonable and the calculation results are correct.

关 键 词：栅元参数 pin-by-pin 接口程序 插值 

分 类 号：TL329[核科学技术—核技术及应用] O571[理学—粒子物理与原子核物理]