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Mathematical modelling of return strokes

Mathematical modelling of return strokes

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The Lightning Flash — Recommend this title to your library

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A lightning flash is initiated by electrical breakdown of the air in a cloud. This process, commonly known as the preliminary breakdown, signifies the initiation of a stepped leader. Such a stepped leader propagates towards the earth, in a succession of nearly discontinuous surges or steps. The stepped leader leaves a charged, conducting channel in its wake. When the leader reaches the ground, the current flowing in the channel increases abruptly, marking the beginning of the return stroke. After the first return stroke, several subsequent return strokes may occur, each of which is preceded by a fast, continuously moving leader the dart leader which propagates from cloud to earth down the channel made by the stepped leader. This chapter is concerned with the mathematical modelling of return strokes.

Inspec keywords: transmission line theory; lightning

Other keywords: mathematical modelling; return strokes; lightning flash; transmission line model; LCR models; electrothermodynamic model; semiphysical model; engineering model

Subjects: Atmospheric electricity

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