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

1991, Volume1

Issue 3

112 pages

Issue price - $75.00

T. R. Ohrn
Thermal Sciences and Propulsion Center, School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907

Dwight W. Senser
Thermal Sciences 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

The effects of nozzle geometry, flow conditions, and manufacturing imperfections on spray cone angle are examined using 40 different plain-orifice atomizers. The length/diameter ratios of the discharge orifices are varied from 2 to 5 while maintaining the orifice diameter constant at 0.254 mm. A universal calibrating fluid, Viscor 1487-C, is injected at pressures up to 109 MPa into air at normal atmospheric pressure. Analysis of the experimental data indicates that the spray cone angle is very dependent on the shape and condition of the orifice inlet. Sharp-edged inlets, rough-edged inlets, and rounded inlets all exhibit different characteristics with regard to the effects of length/diameter ratio and injection pressure on the measure cone angle.

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