Finite element model of the human head exposed to electrostatic field generated by Video Display Units

Abstract

The goal of this paper is to investigate interaction between electrostatic field of Video Display Units (VDU's) and human head in front of it. Special attention is given to the field at the surface of the face. The finite element model for assessment of the electrostatic field, by solving Laplace equation for the electric potential, is implemented. The electrostatic field is calculated for two different faces and for two different types of the domain and then compared with results obtained by the finite difference method. The advantage of the presented numerical method is a high resolution and a higher accuracy.

Boundary element model of the human head exposed to an electrostatic field generated by Video Display Units

“…Results obtained in this work are comparable with the ones obtained by different methods and presented in earlier publications such as [3] (FDM) and [8] (FEM). Exact comparison with results obtained in [3] cannot be made due to different shapes of the heads being considered.…”

“…What should be stated is that the values of electrostatic field are very similar and the behaviour of the field on the face is similar in nature. Comparing results obtained in this work with the results obtained in [8] using FEM for the same head models some differences arise.…”

“…Discretising the boundary and applying the collocation technique, expression (8) can be rewritten in the following form: [ ]…”

“…Also, results obtained within this work are compared to those found by different methods, i.e. Finite Differences (FDM) [3] and Finite Elements (FEM) [8]. The principal motivation for studying this problem is lack of information of electrostatic field at the surface of human face, and the need to investigate accuracy of the results already obtained and published.…”

Comparison Between Finite and Boundary Element Methods for Analysis of Electrostatic Field Around Human Head Generated by Video Display Units

“…Contrary to the usual approach featuring the use of the FDM [3], the electrostatic field around human head is assessed using both BEM and FEM. The mathematical formulation is based on Laplace equation for electrostatic potential [17], [18]. To achieve more reliable results for the comparison purposes the field is calculated for two different faces.…”