Source Charge Model and Its Application in Simulation of Lightning Discharges

摘要：

Source charge model is reviewed and is used to analyze electric field changes caused by eight directions of lightning streamers.Moreover, an improved piecewise-linear source charge model combined with the three-dimensional radiation source mapping results to interpret electric field changes on the ground is proposed.This model is applied to simulating E-field waveform and calculating electric parameters within initial streamer and the K event in an intracloud flash. The simulation result is consistent with the measured waveform.Mean charge line densities,currents and transferred charges of two processes are estimated: for the initial streamer, they are 0.53C/kin,188.2A, and 3.8C, respectively; while for the K event, they are varying with the development of the channel.

关键词： Source charge model lightning discharges electric field change

作者: Shi Qiu Bi-hua Zhou Wan-sheng Dong Yi Zhang

作者单位: with the Electromagnetic Pulse Laboratory,Nanjing Engineering Institute,Nanjing,China with the Electromagnetic Pulse Laboratory,Nanjing Engineering Institute,Nanjing,China. with the Laboratory of Lightning Physics and Protection Engineering,Chinese Academy of Meteorologica with the Nanjing Engineering Institute,Nanjing,China

会议类型: 国际会议

会议名称: Asia-Pacific Conference on Environmental Electromagnetics CEEM2009(第五届亚太环境电磁学学术会议)

会议地点: 西安

会议语种:英文

页码: 85-88

在线出版日期: 2009-09-16（万方平台首次上网日期，不代表论文的发表时间）