A 3D BEM Modelling Of Human Exposure To
Extremely Low Frequency (ELF) Electric Fields
Author(s)
D. Poljak, A. Peratta & C. A. Brebbia
Abstract
The boundary element analysis of the human body exposed to extremely low
frequency (ELF) electric fields is presented in this work. The human being is
represented by a multidomain inhomogeneous body of revolution. The
formulation of the problem is based on the quasi-static approximation and the
related Laplace equation form of the continuity equation. This Laplace equation
has been solved by the boundary element method (BEM). Solving the resulting
Laplace equation for the electric scalar potential, the induced current density
inside the human body is obtained. This quantity is the fundamental parameter in
further analysis of possible biological effects of ELF exposures. An illustrated
computational example of the human body exposed to the electric field generated
by an overhead power line is also presented.
1 Introduction
The tremendous growth in the use of electrical energy for industrial applications
is associated with the continuous presence of extremely low frequency (ELF)
electric fields in the environment.
At low frequency exposures, i.e. when displacement currents can be
neglected, the electric and magnetic fields are assumed to be decoupled.
Generally, human being can be exposed to two kinds of electromagnetic fields
generated by low frequency (LF) power systems: 1) low voltage/high intensity
systems (The principal radiated field is the magnetic one, while the induced
currents form close loops in the body); 2) high voltage/low intensity systems
(The principal radiated field is the electric one while the induced currents have
the axial character).
Keywords
Related Book
Other papers in this volume
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