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Calculation of elec...
Calculation of electromagnetic fields in free space when lightning strikes a tall object
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- Zhou, Helin (författare)
- KTH,Elektroteknisk teori och konstruktion
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- Thottappillil, Rajeev (författare)
- KTH,Elektroteknisk teori och konstruktion
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Diendorfer, G. (författare)
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(creator_code:org_t)
- IEEE Computer Society, 2013
- 2013
- Engelska.
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Ingår i: 2013 International Symposium on Lightning Protection (XII SIPDA). - : IEEE Computer Society. - 9781479913435 ; , s. 91-95
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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visa färre...
Abstract
Ämnesord
Stäng
- We calculate vertical electric field and azimuthal magnetic field at different elevation angles and distances associated with lightning strikes a tall object. Simple and exact expressions for electromagnetic fields are derived when the current reflection coefficient at tall object top is zero and return stroke propagation speed in the lightning channel is equal to the speed of light. Further, we investigate the effects of current reflection coefficient at tall object top being not zero and the propagation speed is less than the speed of light (e.g., one half) on electromagnetic fields. Interestingly, we find that the vertical electric field has its largest peak value either at the smallest elevation angle or at the largest elevation angle. While for the azimuthal magnetic field, we note that its largest peak value is always at the smallest elevation angle or relatively small elevation angles.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- electromagnetic fields
- free space
- lightning
- tall object
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)
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