Radiative and conductive heat transfer in a nongrey semitransparent medium. Application to fire protection curtains

Nacer Berour (1) , David Lacroix (1) , Pascal Boulet (1) , Gérard Jeandel (1)

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

This paper deals with heat transfer in nongrey media which scatter, absorb and emit radiation. Considering a two dimensional geometry, radiative and conductive phenomena through the medium have been taken into account. The radiative part of the problem was solved using the discrete ordinate method with classical S n quadratures. The absorption and scattering coeecients involved in the radiative transfer equation (RTE) were obtained from the Mie theory. Conduction inside the medium was linked to the RTE through the energy conservation. Validation of the model has been achieved with several simulation of water spray curtains used as ÿre protection walls. ?

Mots clés: Droplet; Mie theory; Water curtain; Radiation and conduction

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

Nacer Berour, David Lacroix, Pascal Boulet, Gérard Jeandel. Radiative and conductive heat transfer in a nongrey semitransparent medium. Application to fire protection curtains. Journal of Quantitative Spectroscopy and Radiative Transfer, 2004, 86 (1), pp.9 - 30. ⟨10.1016/s0022-4073(03)00235-8⟩. ⟨hal-01887301⟩