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

1999, Volume9

Issue 4

116 pages

Issue price - $75.00

Michael P. Moses
School of Aeronautics and Astronautics, Purdue University, West Lafayette, Indiana, USA

Steven H. Collicott
School of Aeronautics and Astronautics, Purdue University, 1375 Aviation Drive, West Lafayette, IN 47907-2015, USA

Steve D. Heister
School of Aeronautics and Astronautics, Purdue University, West Lafayette, Indiana, USA

Experimental results have been obtained to assess aerodynamic effects on droplet sizes and nonlinear wave shapes for low-speed jets with forced perturbations. One-dimensional digital image processing used previously with anamorphic optics is successfully adapted to measurement of droplet images from circularly symmetric optics. These digital image processing techniques are demonstrated for automated subpixel edge detection, thereby yielding unambiguous quantitative information such as droplet sizes and wave shape in an automated manner. The imaging and signal processing techniques and their rigorous calibration are discussed in detail. The techniques have been used to assess the influence of excitation frequency and aerodynamic influence (from the gas phase) on droplet size and jet behavior. Results are also compared to those from previous experiments and from theoretical calculations using boundary-element methods.

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