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Title: A simple physical model for self-Triggered upward leaders from high-rise buildings
Authors: Chan, MK 
Chen, M 
Du, Y 
Keywords: Lightning
Propagation model
Upward leader
Issue Date: 2016
Publisher: Institute of Electrical and Electronics Engineers Inc.
Source: 2016 33rd International Conference on Lightning Protection, ICLP 2016, 2016, 7791486 How to cite?
Abstract: This paper presents a simple physical model for an upward positive leader initiated from a tall grounded object. Characteristics such as the leader channel structure, leader initiation criteria, leaded propagation speed, leader current and channel longitudinal electric field are described and modelled step-by-step. Other parameters including the evolution of leader line charge density, leader core conductance and radius, and leader corona sheath radius are also computed and evaluated. Particularly, the minimum corona sheath radius and corona charge density for leader initiation and stable propagation based on existing experiment data are proposed. The model may serve as a virtual lab to study the initiation of an upward leader at the top of a tall ground structure for tall building lightning protection analysis.
Description: 33rd International Conference on Lightning Protection, ICLP 2016, Portugal, 25-30 September 2016
ISBN: 9781509058433
DOI: 10.1109/ICLP.2016.7791486
Appears in Collections:Conference Paper

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