三维电晕放电模型的开发与应用  

Development and Application of Three-dimensional Corona Discharge Model

作　　者：郭秀峰 章玲 高玥 汪兆霞 赵念 GUO Xiu-feng;ZHANG Ling;GAO Yue;WANG Zhao-xia;ZHAO Nian(College of Electronic and Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China;College of Atmosphere and Remote Sensing,Wuxi University,Wuxi 214105,China;State Key Laboratory of Severe Weather,Chinese Academy of Meteorological Sciences,Beijing 100081,China)

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044 [2]无锡学院大气与遥感学院,无锡214105 [3]中国气象科学研究院灾害天气国家重点实验室,北京100081

出　　处：《科学技术与工程》2024年第10期3997-4004,共8页Science Technology and Engineering

基　　金：国家自然科学基金青年科学基金(42205078);江苏省自然科学基金青年科学基金(BK20190147);江苏省高等学校自然科学研究面上项目(21KJB170007,22KJB170021);灾害天气国家重点实验室开放课题(2021LASW-B04);无锡学院自然科学类重点项目(2019bjynk005)。

摘　　要：电晕放电是研究地闪过程和雷电预警的关键,而以往的模型多为二维模型或一维模型,且多以单个建筑物电晕放电为研究对象,因此建筑物(群)电晕放电的研究受到越来越多的关注,三维电晕放电模型的开发具有重要的意义。开发了考虑风场与忽略风场两种不同情况下的三维电晕放电模型,并通过应用于单针系统、双针系统以及九针系统,研究风场对单针系统电晕放电的影响以及多个尖端之间电晕放电的相互影响,以证明本文模型的可靠性与准确性。不同于均匀网格的划分,所开发的三维模型所采用变网格划分的方法不仅可以实现对大模拟域中细小尖端的精细化模拟,还能扩大模拟域范围;与一维和二维模型相比,本文模型能更全面地获取三维空间中电晕电荷的时空演变特征,且适用于研究多个尖端之间电晕放电的特征,如九针系统,这也是以往模型所无法实现的。The corona discharge is the key to the study of ground lightning process and lightning warning,and most of the previous models are two-dimensional or one-dimensional models,and the corona discharge of a single building is the research object,therefore,more and more attention has been paid to the study of corona discharge in buildings,and the development of three-dimensional corona discharge model is of great significance.Three-dimensional corona discharge model considering wind field and ignoring wind field were developed,which are applied to single-needle system,double-needle system and nine-needle system,in order to prove the reliability and accuracy of the model,the influence of wind field on corona discharge of single-needle system and the interaction of multiple tips were studied.Different from the uniform mesh,the variable mesh method can not only realize the fine simulation of the small tip in the large simulation domain,but also expand the simulation domain.Compared with the one-dimensional and two-dimensional models,the present model can capture the space-time evolution of corona charge in the three-dimensional space more comprehensively,and is suitable for studying the characteristics of corona discharge between multiple tips,such as the nine-pin system,this is something that previous models have not been able to achieve.

关 键 词：电晕放电 三维电晕放电模型 变网格划分 精细化模拟 

分 类 号：P404[天文地球—大气科学及气象学]