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Experiments in Fluids

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01-03-2011 | Research Article

Combined PDA and LIF applied to size–temperature correlations measurements in a heated spray

Authors: V. Deprédurand, A. Delconte, F. Lemoine

Published in: Experiments in Fluids | Issue 3/2011

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Abstract

This paper aims to demonstrate the possibility to achieve droplet temperature measurements per droplet size class by combining two-color laser-induced fluorescence (LIF) and phase Doppler analyzer (PDA). For that purpose, PDA and LIF signal acquisitions are synchronized on the same time base. LIF signal is processed on each of the defined size classes in order to derive the droplet temperature. Since PDA is roughly sensitive to D ² and LIF roughly to D ³, the detection range of the combination of the two techniques in term of droplet size is carefully analyzed. Finally, the technique is demonstrated on a spray of n-decane injected in a turbulent over-heated air flow. The influence of the droplet size and Stokes number on the heating process of the droplets is clearly highlighted.

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Title: Combined PDA and LIF applied to size–temperature correlations measurements in a heated spray
Authors: V. Deprédurand
A. Delconte
F. Lemoine
Publication date: 01-03-2011
Publisher: Springer-Verlag
Published in: Experiments in Fluids / Issue 3/2011
Print ISSN: 0723-4864
Electronic ISSN: 1432-1114
DOI: https://doi.org/10.1007/s00348-010-0956-3

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