雷击多个建筑的三维数值模拟

doi:10.14088/j.cnki.issn0439-8114.2021.01.029

湖北农业科学 ›› 2021, Vol. 60 ›› Issue (1): 141-146.doi: 10.14088/j.cnki.issn0439-8114.2021.01.029

雷击多个建筑的三维数值模拟

陈睿凌, 师正, 李杰, 曲凯悦, 徐佳伦

南京信息工程大学气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室/气象灾害预报预警与评估协同创新中心/中国气象局气溶胶与云降水重点开放实验室,南京 210044

收稿日期:2020-04-24 出版日期:2021-01-10 发布日期:2021-02-02
通讯作者: 师正(1986-),男,江苏南通人,博士,主要从事大气电学研究,(电子信箱)gyshiz@126.com。
作者简介:陈睿凌(1998-),男,江苏南京人,在读本科生,研究方向为雷电防护与技术,(电话)17749591926(电子信箱)980906660@qq.com。
基金资助:
国家自然科学基金项目(41805002);江苏省自然科学基金项目(BK20180808);南京信息工程大学人才启动基金项目(2016r042);江苏省高等学校自然科学研究项目(18KJB170010);江苏省大学生创新创业训练计划项目(2018103000073X)

Three-dimensional numerical simulation of lightning strike buildings group

CHEN Rui-ling, SHI Zheng, LI Jie, QU Kai-yue, XU Jia-lun

Key Laboratory of Meteorological Disaster,Ministry of Education,Nanjing University of Information Science & Technology/Joint International Research Laboratory of Climate and Environment Change /Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters /Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration,Nanjing 210044,China

Received:2020-04-24 Online:2021-01-10 Published:2021-02-02

摘要/Abstract

摘要： 利用三维先导参数化放电方案,保持方案中的基本参数不变,通过改变闪电随机参数,模拟同一建筑物(群)条件下不同闪电的发展形态,改变2个建筑物的尺寸及间距,得到了不同建筑物(群)条件下不同闪电的数据,研究建筑物特征参数对闪电活动的影响。结果表明,高建筑物对低建筑物存在明显的保护作用,保护概率与建筑物间间距存在负相关线性关系,并存在临界保护距离：高建筑物高300 m,低建筑物高100 m,高低建筑物长宽均为50 m时,临界保护距离约为100 m;高建筑物拐角处能引发更强的电场畸变,从而对低建筑物产生保护作用;在控制其他参数不变的情况下,随着高建筑物高度的增大,保护概率随之增大;建筑物的间距增大,保护概率随之减小。此外,还给出了一个适用于不同建筑物群的雷击保护概率计算公式。

关键词: 闪电活动, 数值模拟, 建筑物群, 雷击概率

Abstract: Using three-dimensional pilot parametric discharge scheme to keep the basic parameters of the scheme unchanged.By changing the random parameters of lightning,the development patterns of different lightning under the same building (group) conditions are simulated.Then change the size and spacing of two buildings to obtain the data of different lightning under different building (group) conditions.Study the influence of building characteristic parameters on lightning activity with these data.The results showed that high buildings had obvious protective effect on low buildings,and there was a negative correlation linear relationship between the protection probability and the distance between buildings.There exist a critical protection distance:When high buildings are 300 m high,low buildings are 100 m high,high and low buildings are 50 m long and wide,the critical protection distance is about 100 m;The corner of high buildings can cause stronger electric field distortion,so as to lower buildings.The height of high buildings is positively correlated with the probability of protection,and the distance between buildings is negatively correlated with the distance of protection.In addition,this paper also gived a calculation formula of lightning protection probability for different buildings.

Key words: lightning activity, numerical simulation, building group, probability of lightning

中图分类号:

陈睿凌, 师正, 李杰, 曲凯悦, 徐佳伦. 雷击多个建筑的三维数值模拟[J]. 湖北农业科学, 2021, 60(1): 141-146.

CHEN Rui-ling, SHI Zheng, LI Jie, QU Kai-yue, XU Jia-lun. Three-dimensional numerical simulation of lightning strike buildings group[J]. HUBEI AGRICULTURAL SCIENCES, 2021, 60(1): 141-146.

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雷击多个建筑的三维数值模拟

Three-dimensional numerical simulation of lightning strike buildings group

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