The Influence of Air and Liquid Properties on Airblast Atomization

[+] Author and Article Information
A. A. Rizkalla, A. H. Lefebvre

School of Mechanical Engineering, Cranfield Institute of Technology, Cranfield, Bedford, England

J. Fluids Eng 97(3), 316-320 (Sep 01, 1975) (5 pages) doi:10.1115/1.3447309 History: Received June 16, 1975; Online October 12, 2010


An experimental study of airblast atomization has been conducted using a specially designed atomizer in which the liquid is first spread into a thin sheet and then exposed on both sides to high-velocity air. The first results of this study, reported in reference [1], were confined to the effects of liquid properties, namely, viscosity, surface tension, and density on atomization quality. Since then the experimental data have been extended to include the influence of air properties, notably temperature and pressure, on-mean drop size. The purpose of this paper is to present these data and to show that the effects of both air and liquid properties on atomization quality are described by the following dimensionless equation:

SMD/t = A(σe ρe/t)0.5
  (Va ρa)−1.0 (1 + We/Wa)
  + B(ηe2eρat)0.425 (1 + We/Wa)2

Copyright © 1975 by ASME
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