Wessapan, T., Rattanadecho, P. and Wongchadakul, P.”Effect of body position on natural convection within anterior of the human eye during exposure to electromagnetic fields” Numerical Heat Transfer; Part A: Applications, VolDOI:10.1080/10407782.2015.1109352, pp.1014-1028, 2016.
Impact Factor: 2.96 (Q1)
Abstract
Heating is the main biological effect of the electromagnetic (EM) fields to
human eye. This study intends to focus attention on the differences in the
heat transfer characteristics of the human eye induced by EM fields in
different body positions. The effect of three different body positions – sitting,
supine, and prone – on natural convection of aqueous humor (AH) in the
anterior chamber of the eye is systematically investigated. The specific
absorption rate (SAR) value, fluid flow, and the temperature distribution in
the eye during exposure to EM fields are obtained by numerical simulation of
EM wave propagation. In this study, the frequencies of 900 and 1,800 MHz are
chosen for the investigations. The heat transfer model used in this study is
developed based on natural convection and porous media theories. The
results show that the AH temperature inside the anterior chamber is the
highest in the supine position at both frequencies. It is found that during
exposure to EM fields, body position plays an important role on AH natural
convection and the heat transfer process within the anterior chamber and its
periphery in the front part of the eye. However, the body position has no
significant effect on temperature distribution for the middle part of the eye.
The obtained results provide information on the body position and thermal
effects from EM fields exposure.
