Characterization of a flat fan air-blast atomizer spray by global rainbow refractometry

Qi Pan

doi:10.1117/12.907063

30 November 2011 Characterization of a flat fan air-blast atomizer spray by global rainbow refractometry

Qi Pan

Proceedings Volume 8201, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 82010P (2011) https://doi.org/10.1117/12.907063
Event: International Conference on Optical Instruments and Technology (OIT2011), 2011, Beijing, Beijing, China

Abstract

The characterization of spray behavior especially the droplets parameters are very important for many industrial applications. In this paper, the droplets parameters of a flat fan water spray were measured using a new developed global rainbow refractometry. the global rainbow mechanism of spray is studied in detail. The effects of discrete parameter, distribution function, mean diameter and disperse coefficient on global rainbow of spray are concerned. a new rainbow parameter inversion algorithm of particles is proposed. This algorithm can inverse both particle diameter distribution and refractive index simultaneously, without pre-knowledge of droplets diameter distribution function and range. The algorithm removes the noised using empirical mode decomposition (EMD) method, and inverses the data based on regularized NNLS and regularization method. The experimental measurements are performed on a flat fan air-blast atomizer spray, and the droplets size distribution and the refractive index have been measured under five different gasliquid ratio conditions.

Citation Download Citation

Qi Pan "Characterization of a flat fan air-blast atomizer spray by global rainbow refractometry", Proc. SPIE 8201, 2011 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 82010P (30 November 2011); https://doi.org/10.1117/12.907063

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