Evaluation of temperature gradients within combusting droplets in linear stream using two colors laser-induced fluorescence | Zendy

Guillaume Castanet | Zendy; Alain Delconte | Zendy; Fabrice Lemoine | Zendy; Loïc Méès | Zendy; Gèrard Gréhan | Zendy

Open Access

Evaluation of temperature gradients within combusting droplets in linear stream using two colors laser-induced fluorescence

Author(s) -

Guillaume Castanet,

Alain Delconte,

Fabrice Lemoine,

Loïc Méès,

Gèrard Gréhan

Publication year - 2005

Publication title -

experiments in fluids

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.01

H-Index - 122

eISSN - 1432-1114

pISSN - 0723-4864

DOI - 10.1007/s00348-005-0931-6

Subject(s) - combustion , materials science , volume (thermodynamics) , optics , laser induced fluorescence , fluorescence , field (mathematics) , mie scattering , excitation , laser , interference (communication) , mechanics , thermodynamics , physics , chemistry , light scattering , channel (broadcasting) , mathematics , electrical engineering , organic chemistry , quantum mechanics , pure mathematics , engineering , scattering

International audienceThe scope of this paper concerns the heating process of fuel droplets injected in a hot gaseous environment. The two colors laser-induced fluorescence technique allows measuring the temperature distribution within a droplet by scanning the droplet volume by a sufficiently small probe volume compared to the droplet volume itself. The temperature field is reconstructed using two approaches which have been compared. One is based on a geometrical optics model and the other is based on the 3D calculation of the internal excitation field within the droplet, using the generalized Lorenz-Mie theory. Experimental results have been obtained on a combusting monodisperse ethanol droplet stream (diameter around 200 lm)

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