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Atomization and Sprays
インパクトファクター: 1.262 5年インパクトファクター: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

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.i1.40
pages 77-89

EFFERVESCENT ATOMIZATION AT LOW MASS FLOW RATES. PART I: THE INFLUENCE OF SURFACE TENSION

M. T. Lund
Thermal Sciences and Propulsion Center, School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907
Paul E. Sojka
Maurice J. Zucrow Laboratories (formerly Thermal Sciences and Propulsion Center), School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, 47907-2014, USA
Arthur H. Lefebvre
Emeritus Professor, Cranfield University, Stratford, U.K., and Purdue University, W. Lafayette, IN, USA
P. G. Gosselin
Cincinnati, Ohio 45224

要約

An effervescent atomizer that operates at flow rates of 1.5 g/s and below is shown to produce sub-70-μm Sauter mean diameter sprays at pressures below 337 kPa (40 psig) while utilizing very small amounts of atomizing air (air—liquid ratio by mass below 0.02). The mean drop sizes produced by this nozzle are found to be nearly independent of liquid viscosity for values ranging from 20 to 80 cP, while an increase in liquid surface tension from 30 to 67 dynes/cm serves to decrease mean drop size. Qualitative and quantitative descriptions of the data are obtained by modeling the atomization process as the formation of a number of ligaments at the exit orifice and their subsequent breakup using the classical analysis of Weber.


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