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

ISSN for PRINT: 1045-5110

For Online Access

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1994, Volume4

Issue 3

118 pages

Issue price - $75.00

S. Kevin Chen
Thermal Sciences and Propulsion Center, School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA

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

The spray cone angles produced by a plain-orifice effervescent atomizer are examined using three fluids whose viscosities range from 0.001 to 0.023 kg/ms (1 to 23 cp) and surface tensions from 0.030 to 0.080 kg/s² (30 to 80 dynes/cm). Measurements of the visible spray cone angle were carried out over wide ranges of both air injection and ambient air pressures. The results obtained show that the sprays produced in effervescent atomization have appreciably wider cone angles than those produced by plain-orifice pressure atomizers. In general, spray angles are widened by reductions in liquid viscosity and surface tension and by increases in atomizing air injection pressure.

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