Dynamic modelling of lightning return stroke and its optical and electromagnetic radiations based on Maxwell'S integral-equations

Mingli Chen, Shuyao Cai, Ya Ping Du

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

A lightning return stroke is always preceded by a downward leader process that takes a dominant role in determining the property of the return stroke. Besides, the channel parameters of a return stroke are spatial and temporal variables. These two points are ignored or scorned in most of existing return stroke modelling. In this research, we have developed a leader-return stroke coupled model based on the time domain electric field integral equation (TD-EFIE), which is actually a growth of Kumar's microscopic model. With a presumed leader channel and boundary condition, a set of equations controlling the evolutions of return stroke parameters, such as the channel current, channel charge deposit, channel radius and conductance, is derived. Furthermore, based on the channel current and conductance, a set of equations for calculating the current-produced electromagnetic fields and light emissions is also derived. A trial of the present model yielded preferable results on both the return stroke current and its optical and electromagnetic radiations in comparison with those observations in literature.
Original languageEnglish
Title of host publicationProceedings - 7th Asia-Pacific Conference on Environmental Electromagnetics, CEEM 2015
PublisherIEEE
Pages11-16
Number of pages6
ISBN (Electronic)9781467394451
DOIs
Publication statusPublished - 29 Dec 2015
Event7th Asia-Pacific Conference on Environmental Electromagnetics, CEEM 2015 - Hangzhou, China
Duration: 4 Nov 20157 Nov 2015

Conference

Conference7th Asia-Pacific Conference on Environmental Electromagnetics, CEEM 2015
CountryChina
CityHangzhou
Period4/11/157/11/15

Keywords

  • electromagnetic field
  • light emission
  • lightning current
  • lightning return stroke
  • Maxwell's integral equation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Radiation
  • Environmental Science (miscellaneous)

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