Eur. Phys. J. AP 2, 117-125 (1998)
https://doi.org/10.1051/epjap:1998174

Thermoelastic analysis under harmonic excitation: Comparison between optical and electronic heat sources

Laboratoire d'Énergétique et d'Optique, Unité de Thermique et d'Analyse Physique, Faculté des Sciences, BP 1039, 51687 Reims Cedex 2, France

Corresponding author: yannick.gillet@univ-reims.fr

Received: 8 August 1997
Revised: 23 December 1997
Accepted: 19 February 1998
Published online: 15 May 1998

Abstract

The thermal behaviour of a sample submitted to a sinusoidal optical irradiation or a sinusoidal electronic irradiation is modelled in axisymmetrical two- dimensional geometry. This modelling mixes an integral transform and a one-dimensional thermal harmonic response. It shows the spherical thermal behaviour of the harmonic heat diffusion. The same solving method is applied to the Navier-Stokes equation using one-dimensional acoustic harmonic responses. The latter solution leads to the calculation of the displacement field. Finally, the two heat sources are compared from thermal and thermoelastic points of view.