Coupled radiative and conductive heat transfer in a non-grey absorbing and emitting semitransparent media under collimated radiation

David Lacroix (1) , Gilles Parent (1) , Fatmir Asllanaj (1) , Gérard Jeandel

1 LEMTA - Laboratoire d'Energétique et Mécanique Théorique et Appliquée

This paper deals with heat transfer in non-grey semitransparent two-dimensional sample. Considering an homogeneous purely absorbing medium, we calculated the temperature ÿeld and heat uxes of a material irradiated under a speciÿc direction. Coupled radiative and conductive heat transfer were considered. The radiative heat transfer equation (RTE) was solved using a S 8 quadrature and a discrete ordinate method. Reeection and absorption coeecients of the medium were calculated with the silica optical properties. The conduction inside the medium was linked to the RTE through the energy conservation. Validation of the model and two original cases are also presented. ?

Domaines: Thermique [physics.class-ph]; Science des matériaux [cond-mat.mtrl-sci]; Micro et nanotechnologies/Microélectronique

David Lacroix, Gilles Parent, Fatmir Asllanaj, Gérard Jeandel. Coupled radiative and conductive heat transfer in a non-grey absorbing and emitting semitransparent media under collimated radiation. Journal of Quantitative Spectroscopy and Radiative Transfer, 2002, 75, pp.589 - 609. ⟨10.1016/S0022-4073(02)00031-6⟩. ⟨hal-01887302⟩