大型垂直极化EMP辐射波模拟器时域辐射近场的快速预估

doi:10.19596/j.cnki.1001-246x.7981

计算物理 ›› 2020, Vol. 37 ›› Issue (1): 97-106.DOI: 10.19596/j.cnki.1001-246x.7981

大型垂直极化EMP辐射波模拟器时域辐射近场的快速预估

朱湘琴, 吴伟, 贾伟, 蔡利兵

西北核技术研究院强脉冲辐射环境模拟与效应国家重点实验室, 陕西西安 710024

收稿日期:2018-10-10 修回日期:2018-11-13 出版日期:2020-01-25 发布日期:2020-01-25
作者简介:朱湘琴(1978-),女,博士,副研究员,主要从事电磁环境及电磁脉冲模拟技术研究,E-mail:zhuxiangqin@nint.ac.cn
基金资助:
强脉冲辐射环境模拟与效应国家重点实验室专项经费（SKLIPR1601Z）资助项目

Fast Simulation of Radiation Near-fields of Large Vertically Polarized EMP Radiating-wave Simulator

ZHU Xiangqin, WU Wei, JIA Wei, CAI Libing

State Key Laboratory of Intense Pulsed Radiation Simulation and Effect, Northwest Institute of Nuclear Technology, Xi'an, Shanxi 710024, China

Received:2018-10-10 Revised:2018-11-13 Online:2020-01-25 Published:2020-01-25

摘要/Abstract

摘要： 将二维轴对称柱坐标系中基于MPI平台的并行FDTD （MPI-FDTD）方法与基于基尔霍夫表面积分表达式（KSIR）的场变换相结合，实现"MPI-FDTD+MPI-KSIR"的混合并行技术，并应用于无电阻加载的大型垂直极化电磁脉冲（EMP）辐射波模拟器时域辐射近场的快速预估.验证算例所得辐射近场不仅与商用软件及并行FDTD的整体模拟符合很好，且与并行FDTD整体模拟相比可以节约80%的计算时间.给出并行加速比和并行效率的测试结果.该方法可用于其它大型垂直极化EMP辐射波模拟器时域辐射近场和辐射远场的快速预估.

关键词: MPI, KSIR, 近场-近场变换, 电磁脉冲, 辐射波模拟器

Abstract: A hybrid parallel technology on message-passing interface (MPI) platform in axisymmetric cylindrical coordinates, combining parallel finite-difference time-domain(FDTD) method and near- to near-field transformation with Kirchhoff surface integral representation(KSIR), is presented for fast computing radiation fields of large vertically polarized EMP radiating-wave simulator. Transient response of electric field at testing points as the simulator excited by double exponential function is given. Calculation results are consistent with those by software and parallel FDTD method, while the computing time is saved about 80%. Speedup factor and efficiency of hybrid parallel technology are measured. The hybrid method has advantages of saving computing time and CPU storage especially for larger simulators. Radiation far-fields besides near-fields in time-domain of simulator can be obtained as well.

Key words: message-passing interface, Kirchhoff surface integral representation, near- to near-field transformation, electromagnetic pulse, radiating-wave simulator

中图分类号:

TN011

朱湘琴, 吴伟, 贾伟, 蔡利兵. 大型垂直极化EMP辐射波模拟器时域辐射近场的快速预估[J]. 计算物理, 2020, 37(1): 97-106.

ZHU Xiangqin, WU Wei, JIA Wei, CAI Libing. Fast Simulation of Radiation Near-fields of Large Vertically Polarized EMP Radiating-wave Simulator[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2020, 37(1): 97-106.

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大型垂直极化EMP辐射波模拟器时域辐射近场的快速预估

Fast Simulation of Radiation Near-fields of Large Vertically Polarized EMP Radiating-wave Simulator

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