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Atomization and Sprays
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ISSN 印刷: 1044-5110
ISSN オンライン: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v3.i2.20
pages 137-155

EFFERVESCENT ATOMIZER OPERATION AND SPRAY CHARACTERISTICS

J. D. Whitlow
Thermal Science and Propulsion Center, School of Mechanical Engineering, Purdue University, West Lafayette, Indiana
Arthur H. Lefebvre
Emeritus Professor, Cranfield University, Stratford, U.K., and Purdue University, W. Lafayette, IN, USA

要約

An experimental study was conducted to examine the performance of a plain-orifice, twin-fluid atomizer that urns designed to produce effervescent atomization at low air/liquid ratios. The liquid employed was water and the atomizing gas was air. The parameters varied were the air/liquid mass ratio (ALR) and the atomizer operating pressure. Studies of spray characteristics included measurements of Sauter mean diameter (SMD), drop size distribution, and radial liquid distribution of the liquid mass within the spray.
It was found that SMD decreases with an increase in either ALR or operating pressure. The effect of ALR on SMD diminishes as the value of ALR increases. Changes in operating pressure and ALR have little effect on the Rosin-Rammler drop size distribution parameter. Measurements of radial liquid distribution showed a significantly larger spray cone angle than those produced by conventional plain-orifice pressure atomizers.


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