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

Abstract : The 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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Experiments in Fluids, Springer Verlag (Germany), 2005, 39 (2), pp.431 - 440. 〈10.1007/s00348-005-0931-6〉
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Guillaume Castanet, Alain Delconte, Fabrice Lemoine, Loïc Mees, Gèrard Gréhan. Evaluation of temperature gradients within combusting droplets in linear stream using two colors laser-induced fluorescence. Experiments in Fluids, Springer Verlag (Germany), 2005, 39 (2), pp.431 - 440. 〈10.1007/s00348-005-0931-6〉. 〈hal-01570421〉

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