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Accelerating the numerical computation of indirect lightning effects by means of vector fitting
Citation Link: https://doi.org/10.15480/882.2005
Publikationstyp
Journal Article
Date Issued
2011-08-01
Sprache
English
Author(s)
Anatzki, Jürgen
Institut
TORE-DOI
TORE-URI
Journal
Volume
9.2011
Start Page
323
End Page
328
Citation
Advances in Radio Science (9): 323-328 (2011-08-08)
Publisher DOI
Scopus ID
Publisher
U.R.S.I.-Landesausschuss in der Bundesrepublik Deutschland e.V.
In the context of numerical computation of indirect lightning effects it is customary to use volume-discretizing methods in time domain, such as the Finite Difference Time Domain (FDTD) method, the Finite Integration Technique (FIT), or the Transmission Line Matrix (TLM) method. If standard lightning electromagnetic pulses (LEMPs) of tenths of microseconds duration are used as excitations, these methods require long computation times, as implied by the Courant criterion. It is proposed to use shorter pulse forms and to compare the transfer functions obtained by different pulse durations by means of macromodels that are obtained from the vector fitting method. Numerical computation of lightning related transfer functions of a canonical structure indicate that the duration of the exciting pulse can typically be shortened by at least one order of magnitude if compared to a standard pulse. © 2011 Author(s) CC Attribution 3.0 License.
DDC Class
620: Ingenieurwissenschaften
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