Evaluation of the cooray-rubinstein formula for distances farther than a few kilometers using the parallel FDTD method

Author

Farsani, Mojtaba Khosravi ; Moini, Rouzbeh ; Sadeghi, S. H Hesam

Author_Institution

Electromagn. Res. Lab., Amirkabir Univ. of Technol., Tehran, Iran

fYear

2011

fDate

13-20 Aug. 2011

Firstpage

1

Lastpage

4

Abstract

In this paper, a parallel finite difference time domain (FDTD) code is developed for the calculation of the horizontal electric field above ground for three distances of 2 Km, 5 Km and 10 Km from the return stroke channel. An electromagnetic model of lightning is adopted for the purpose of simulation. The obtained results are compared with those simulated by Cooray-Rubinstein formula (CR). The effect of ground´s conductivity on the electric field value is also investigated. The results show that the accuracy of CR formula decreases as the ground´s conductivity decreases or distance of observation point from the lightning channel becomes larger.

Keywords

electric field effects; electrical conductivity; electromagnetic wave propagation; finite difference time-domain analysis; CR formula; Cooray-Rubinstein formula; electric field value; electromagnetic model; ground conductivity; horizontal electric field; lightning channel; parallel FDTD method; parallel finite difference time domain code; return stroke channel; Accuracy; Conductivity; Electric fields; Finite difference methods; Lightning; Load modeling; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

General Assembly and Scientific Symposium, 2011 XXXth URSI

Conference_Location

Istanbul

Print_ISBN

978-1-4244-5117-3

Type

conf

DOI

10.1109/URSIGASS.2011.6050707

Filename

6050707