大规模工程电磁场的亿自由度可扩展并行计算方法  

Extensible Parallel Computing Method with Hundreds of Millions of Freedoms for Large-Scale Engineering Electromagnetic Field

作　　者：金亮[1,2] 李育增 杨庆新[1,2] 张闯[1,2] 闫帅 Jin Liang;Li Yuzeng;Yang Qingxin;Zhang Chuang;Yan Shuai(State Key Laboratory of Reliability and Intelligence of Electrical Equipment Hebei University of Technology Tianjin 300130,China;Key Hebei Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability Hebei University of Technology Tianjin 300130,China;Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100081,China)

机构地区：[1]省部共建电工装备可靠性与智能化国家重点实验室(河北工业大学),天津300130 [2]河北省电磁场与电器可靠性重点实验室(河北工业大学),天津300130 [3]中国科学院电工研究所,北京100081

出　　处：《电工技术学报》2022年第3期589-598,共10页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金面上项目(51977148);国家自然科学基金重大研究计划项目(92066206)资助。

摘　　要：精确和快速的电磁场计算,是电工装备精细模拟和优化设计的基础。该文在高性能云平台的高速互联弹性集群上开展可扩展并行计算研究,使用OpenMpi作为消息传递库,选取的区域分解算法为对偶原始有限元撕裂内联(FETI-DP)法,通过改进主从/对等的并行程序框架实现电导率不变时涡流场磁矢势A的并行计算,在降低编程复杂度的同时提高了并行计算效率。使用C语言编写程序,用国际TEAMProblem7基准问题验证可扩展并行计算方法。该文将主从/对等并行程序框架和对偶原始有限元撕裂内联(FETI-DP)法引入电磁计算领域,提高了并行计算效率和可扩展性,为大规模工程电磁场计算提供了一种新的实践和理论方法。Accurate and rapid electromagnetic field calculation is the basis of fine simulation and optimization design of electrical equipment.In this paper,the scalable parallel computing research is carried out on the elastic cluster of high-speed interconnected high-performance cloud platform.OpenMpi is used as the message passing library,and the dual-primal finite element tearing and interconnecting(FETI-DP)method is selected as the domain decomposition algorithm.The parallel computing of eddy current magnetic vector potential A with constant conductivity is achieved by improving the master-slave/peer parallel program framework,which can reduce the complexity of programming and improve the efficiency of parallel computing.The program is written in C language and the scalable parallel computing method is verified by the benchmark problem of international TEAM Problem 7.In this paper,the master-slave/peer-to-peer parallel program framework and the dual-primal finite element tearing and interconnecting FETI-DP method are introduced into the field of electromagnetic computing,which improves the efficiency and scalability of parallel computing,and provides a new practical and theoretical method for large-scale engineering electromagnetic field calculation.

关 键 词：并行计算 电磁场数值计算 有限元法 对偶原始有限元撕裂内联法 

分 类 号：TM153[电气工程—电工理论与新技术]