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.
Original language | English |
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Title of host publication | 2016 33rd International Conference on Lightning Protection, ICLP 2016 |
Publisher | IEEE |
ISBN (Electronic) | 9781509058433 |
DOIs | |
Publication status | Published - 19 Dec 2016 |
Event | 33rd International Conference on Lightning Protection, ICLP 2016 - Estoril, Lisboa, Portugal Duration: 25 Sept 2016 → 30 Sept 2016 |
Conference
Conference | 33rd International Conference on Lightning Protection, ICLP 2016 |
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Country/Territory | Portugal |
City | Estoril, Lisboa |
Period | 25/09/16 → 30/09/16 |
Keywords
- Lightning
- Propagation model
- Upward leader
ASJC Scopus subject areas
- Environmental Engineering