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Book Cover
E-book
Author Cooray, Vernon

Title Lightning Electromagnetics Electrical Processes and Effects, Volume 2
Edition 2nd ed
Published Stevenage : Institution of Engineering & Technology, 2023

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Description 1 online resource (832 p.)
Series Energy Engineering Series
IET energy engineering series.
Contents Intro -- Title -- Copyright -- Contents -- About the editors -- Acknowledgements -- 1 Basic discharge processes in the atmosphere -- 1.1 Introduction -- 1.2 Electron avalanche -- 1.3 Streamer discharges -- 1.4 Corona discharges -- 1.5 Thermalization or heating of air by a discharge -- 1.6 Low-pressure electrical discharges -- 1.7 Leader discharges -- 1.8 Some features of mathematical modelling of positive leader discharges -- 1.9 Leader inception based on thermalization of the discharge channel -- References -- 2 Modelling of charging processes in clouds -- 2.1 Introduction
2.2 Definitions of some model descriptors -- 2.2.1 Basic terminology -- 2.2.2 Terms related to microphysics -- 2.2.3 Categories of electrification mechanisms -- 2.2.4 Other categorizations of cloud models -- 2.3 Brief history of electrification modelling -- 2.4 Parameterization of electrical processes -- 2.4.1 Calculating the electric field -- 2.4.2 Charge continuity -- 2.4.3 The non-inductive graupel-ice collision mechanism -- 2.4.4 The inductive charging mechanism -- 2.4.5 Small ion processes -- 2.5 Lightning parameterizations -- 2.5.1 Stochastic lightning model
2.5.2 Pseudo-fractal lightning -- 2.6 Some applications of models -- 2.6.1 Ion and inductive mechanisms -- 2.6.2 Non-inductive graupel-ice sensitivity -- 2.6.3 Charge structure and lightning type -- 2.6.4 Concluding remarks -- References -- 3 Numerical simulations of non-thermal electrical discharges in air -- 3.1 Introduction -- 3.2 Outline of electro-physical processes in gaseous medium under electric fields -- 3.2.1 Generation of charged species in gas -- 3.2.2 Losses of charged species in gas -- 3.2.3 Dynamics of densities of charge carriers in discharge plasma
3.2.4 Concepts of electron avalanche and streamer -- 3.3 Hydrodynamic description of gas discharge plasma -- 3.4 Solving gas discharge problems -- 3.4.1 Simulations of corona in air -- 3.4.2 Computer implementation of corona model -- 3.4.3 Study case: positive corona between coaxial cylinders -- 3.4.4 Study case: positive corona in rod-plane electrode system -- 3.5 Simulations of streamer discharges in air -- 3.5.1 Study case: positive streamer in a weak homogeneous background field -- 3.5.2 Study case: negative streamer in weak homogeneous background fields -- References
4 Attachment of lightning flashes to grounded structures -- 4.1 Introduction -- 4.2 Striking distance -- 4.3 Leader inception models -- 4.3.1 Critical radius and critical streamer length concepts -- 4.3.2 Rizk's generalized leader inception equation -- 4.3.3 Lalande's stabilization field equation -- 4.3.4 Leader inception model of Becerra and Cooray (SLIM) -- 4.4 Leader progression and attachment models -- 4.5 The potential of the stepped leader channel and the striking distance -- 4.5.1 Armstrong and Whitehead -- 4.5.2 Leader potential extracted from the charge neutralized by the return stroke
Summary Understanding lightning is of importance due to the increase in extreme weather events. The 2nd edition of this classic work has been thoroughly updated and revised, with new content on EM radiation at various wavelengths. Volume 1 treats electrodynamics, whilst volume 2 addresses effects and modelling
Notes Description based upon print version of record
4.5.3 Striking distance based on the leader tip potential
Form Electronic book
Author Rachidi, Farhad
Rubinstein, Marcos
ISBN 9781785615429
1785615424