Investigation of heat and mass transfer between the two phases of an evaporating droplet stream using laser-induced fluorescence techniques: Comparison with modeling

Abstract : Heat and mass exchanges between the two phases of a spray is a key point for the understanding of physical phenomena occurring during spray evaporation in a combustion chamber. Development and validation of physical models and computational tools dealing with spray evaporation requires experimental databases on both liquid and gas phases. This paper reports an experimental study of evaporating acetone droplets streaming linearly at moderate ambient temperatures up to 75 °C. Two-color laser-induced fluorescence is used to characterize the temporal evolution of droplet mean temperature. Simultaneously, fuel vapor distribution in the gas phase surrounding the droplet stream is investigated using acetone planar laser-induced fluorescence. Temperature measurements are compared to simplified heat and mass transfer model taking into account variable physical properties, droplet-to-droplet interactions and internal fluid circulation within the droplets. The droplet surface temperature, calculated with the model, is used to initiate the numerical simulation of fuel vapor diffusion and transport in the gas phase, assuming thermodynamic equilibrium at the droplet surface. Influence of droplet diameter and droplet spacing on the fuel vapor concentration field is investigated and numerical results are compared with experiments.
Type de document :
Article dans une revue
International Journal of Heat and Mass Transfer, Elsevier, 2007, 50, pp.3670 - 3683. 〈10.1016/j.ijheatmasstransfer.2006.08.038〉
Liste complète des métadonnées

Littérature citée [22 références]  Voir  Masquer  Télécharger

https://hal.univ-lorraine.fr/hal-01570365
Contributeur : Guillaume Castanet <>
Soumis le : samedi 29 juillet 2017 - 16:09:25
Dernière modification le : jeudi 15 novembre 2018 - 08:38:45

Fichier

castanet2007b.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Collections

Citation

Guillaume Castanet, C Maqua, M Orain, Frederic Grisch, Fabrice Lemoine. Investigation of heat and mass transfer between the two phases of an evaporating droplet stream using laser-induced fluorescence techniques: Comparison with modeling. International Journal of Heat and Mass Transfer, Elsevier, 2007, 50, pp.3670 - 3683. 〈10.1016/j.ijheatmasstransfer.2006.08.038〉. 〈hal-01570365〉

Partager

Métriques

Consultations de la notice

134

Téléchargements de fichiers

95