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Optical Engineering

Spray Characterization With A Nonintrusive Technique Using Absolute Scattered Light
Author(s): Cecil F. Hess; Victor E. Espinosa
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Paper Abstract

A technique to measure the size and velocity of particles is discussed, and results are presented. In this technique two small laser beams of one color identify the center of a laser beam of a different color. This defines a region of almost uniform intensity where the light scattered by the individual particles can be related to their sizes. A variation of this technique that uses two polarizations of the same color of laser beam is also presented. Results are presented for monodisperse, bimodal, trimodal, and polydisperse sprays produced by the Berglund-Liu droplet generator and a pressure nozzle. Size distributions obtained at three different ranges for the same spray show excellent self-consistency in the overlapping regions. Measurements of a spray of known characteristics exhibit errors in the order of 10%.

Paper Details

Date Published: 1 October 1984
PDF: 6 pages
Opt. Eng. 23(5) 235604 doi: 10.1117/12.7973343
Published in: Optical Engineering Volume 23, Issue 5
Show Author Affiliations
Cecil F. Hess, Spectron Development Laboratories (United States)
Victor E. Espinosa, Spectron Development Laboratories (United States)

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