Spray characterization: Numerical prediction of Sauter mean diameter and droplet size distribution

A simplified equation of the Nukiyama-Tanasawa type for droplet size distribution in sprays is obtained from the synergetic concept of entropy information, assuming spherical droplets and zero and infinity as their limit sizes. The introduction of Sauter mean diameter (SMD) definition in that equati...

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Bibliographic Details
Published in:Fuel (Guildford) 1996-11, Vol.75 (15), p.1707-1714
Main Authors: Semião, Viriato, Andrade, Pedro, Carvalho, Maria da Graça
Format: Article
Language:English
Subjects:
Applied sciences
Combustion of liquid fuels
Combustion. Flame
droplet size
Energy
Energy. Thermal use of fuels
Exact sciences and technology
mathematical modelling
sprays
Theoretical studies. Data and constants. Metering
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Summary:A simplified equation of the Nukiyama-Tanasawa type for droplet size distribution in sprays is obtained from the synergetic concept of entropy information, assuming spherical droplets and zero and infinity as their limit sizes. The introduction of Sauter mean diameter (SMD) definition in that equation yields a new distribution function dependent solely on SMD, which is calculated from available correlations for pressure-jet and pre-filming airblast atomizers. For plain-jet airblast atomizers a new and dimensionally consistent correlation is determined. Several droplet size distributions are then predicted. Experimental data are compared with predictions of SMD; the agreement is satisfactory.
ISSN:0016-2361
1873-7153
DOI:10.1016/S0016-2361(96)00163-9