Finite Element Method Based Simulations of the Magnetic Fields Around the Overhead Transmission Line and Its Dosimetric Analysis

Abstract

In this paper, magnetic field exposure due to overhead transmission line to human body model has been evaluated as the simulation study. Simulations are implemented through COMSOL Multiphysics that is finite element method (FEM) based a commercial software. Human body has been modeled as a two layered cylinder. Upper layer of the cylinder has been indicated as an average skin tissue and the inner layer has been simulated as an average muscle tissue. Also, human head has been modeled and consisted of seven different layers such as skin, outer cortical bone, cancellous bone, inner cortical bone, cerebrospinal fluid (CSF), grey matter and white matter, respectively. Mentioned tissues have been modeled with realistic values at extremely low frequency (ELF) region. Magnetic flux density and induced current density for each tissue have been calculated. While 1474 mA/m2 have been observed as the maximum induced current density at the head model, 353.8 mA/m2 have been obtained at the body model for maximum induced current density value. Obtained results have been discussed in the light of the electromagnetics safety limits published by well-known international organizations.