Temperature and chemical composition of droplets by optical measurement techniques: a state-of-the-art review

Abstract : The measurement of the sizes and the velocities of droplets relies upon widespread and well-established techniques, but characterizing their temperature and their composition remains challenging. The lack of standard methods is particularly detrimental, given the importance of these parameters for validating models and numerical simulations of many spray processes. Heat and mass transfers are dominant aspects in applications such as spray combustion in IC engines, spray cooling, spray drying, wet scrubbers in which liquid sprays capture gas pollutants and also the preparation of nanoparticles via spray route. This paper provides a review of the main techniques available to optically measure the temperature and chemical compositions of single droplets and sprays. Most of these techniques are based on phenomena related to light interaction with matter. Photoluminescence processes like fluorescence and phosphorescence have temperature and composition dependences which can be exploited, while other methods rely on light scattering by the droplets. In particular, the angular position of the rainbow is very sensitive to the refractive index and then to both the temperature and composition. Less widely used diagnostic methods include Raman scattering, thermochromic liquid crystals, thermographic phosphors, infrared thermography, morphology-dependent resonances and their subsequent effects on the stimulated emission of dye molecules. In this review, the emphasis is mainly placed on two groups of techniques―-methods based on laser-induced fluorescence and those based on light scattering―-but details about alternative methods will be also provided. The potential of combining fluorescence-based techniques or rainbow refractometry with a droplet sizing measurement technique to derive temperature and composition per size class will be also discussed.
Type de document :
Article dans une revue
Experiments in Fluids, Springer Verlag (Germany), 2013, 54 (7), pp.1572. 〈10.1007/s00348-013-1572-9〉
Liste complète des métadonnées

Littérature citée [185 références]  Voir  Masquer  Télécharger

https://hal.univ-lorraine.fr/hal-01431048
Contributeur : Lemta Ul <>
Soumis le : lundi 3 avril 2017 - 21:59:56
Dernière modification le : jeudi 11 janvier 2018 - 06:27:33
Document(s) archivé(s) le : mardi 4 juillet 2017 - 14:57:05

Fichier

Lemoine_EXIF_2013.pdf
Fichiers produits par l'(les) auteur(s)

Licence


Distributed under a Creative Commons Paternité - Pas d'utilisation commerciale - Pas de modification 4.0 International License

Identifiants

Collections

Citation

Fabrice Lemoine, Guillaume Castanet. Temperature and chemical composition of droplets by optical measurement techniques: a state-of-the-art review. Experiments in Fluids, Springer Verlag (Germany), 2013, 54 (7), pp.1572. 〈10.1007/s00348-013-1572-9〉. 〈hal-01431048〉

Partager

Métriques

Consultations de la notice

81

Téléchargements de fichiers

207