六角形特征线方法及区域分解并行  

Hexagonal method of characteristics with area decomposition in parallel

作　　者：吴文斌 王志强[1] 郑竞超 谢择怿 赵晨 彭星杰 WU Wenbin;WANG Zhiqiang;ZHENG Jingchao;XIE Zeyi;ZHAO Chen;PENG Xingjie(Institut Franco-Chinois de l′Energie Nucléaire,Sun Yat-sen University,Guangdong Zhuhai 5190822,China;Science and Technology on Reactor System Design Technology Laboratory,Nuclear Power Institute of China,Chengdu 610213,China)

机构地区：[1]中山大学中法核工程与技术学院,广东珠海519082 [2]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,四川成都610213

出　　处：《哈尔滨工程大学学报》2022年第12期1798-1802,共5页Journal of Harbin Engineering University

基　　金：核动力技术创新基金项目(HDLCXZX-2021-HD-030).

摘　　要：为了解决六角形几何堆芯中子输运问题,本文基于开源的OpenMOC程序开发了六角形模块化射线布置的并行计算程序OpenMOC-HEX。程序采用构造实体几何对六角形几何进行建模,并模块化布置特征线以实现射线的精确连接。针对核反应堆大规模数值模拟计算时间长的特点,本程序实现了基于六角形组件区域分解的消息传递接口并行。对六角形C5G72D基准例题的计算结果表明本程序具有良好的计算精度,对多圈六角形组件例题的计算结果表明,上千进程跨节点运行时消息传递接口并行效率约85%。本文结果满足特征线程序在计算精度和扩展性上的要求,可为六角形反应堆堆芯建模和计算提供软件辅助。To solve the neutron transport problem in the core with hexagonal geometry components,in this study,a parallel calculation program OpenMOC-HEX based on the OpenMOC program was developed,which uses solid construction geometry to model the hexagonal geometry and modularly arranges characteristic lines to achieve an accurate connection of rays.Message passing interface parallelism based on the regional decomposition of hexagonal components is implemented for the long computation time of the large-scale numerical simulations of nuclear reactors.The results for the hexagonal C5G72D benchmark show that the code has good computational accuracy,and the results for the multiloop hexagonal component benchmark show that the message passing interface parallelism efficiency is approximately 85%for numerous processes.The results of this research satisfy the requirements for the computational accuracy and scalability of the method of characteristics code and can provide software assistance for hexagonal reactor core modeling and computation.

关 键 词：六角形几何 特征线方法 数值模拟 并行计算 反应堆物理 中子输运 区域分解 大规模并行 

分 类 号：TL32[核科学技术—核技术及应用]