Atomization and Sprays Journal of the International Institutes for Liquid Atomization and Spray Systems

ISSN for PRINT: 1045-5110

For Online Access

Best Paper Award Selection - Editorial Board Site

1993, Volume3

Issue 1

126 pages

Issue price - $75.00

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, USA

Arthur H. Lefebvre
Emeritus Professor, Cranfield University, Stratford, U.K., and Purdue University, W. Lafayette, IN, USA

P. G. Gosselin
Cincinnati, Ohio 45224

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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