Title :
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
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;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050707
