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RESEARCH PAPERS

Experimental Study of the Effect of Dense Spray on Drop Size Measurement by Light Scattering Technology

[+] Author and Article Information
Ju Shan Chin

Purdue University, West Lafayette, IN 47907

Wei Ming Li, Yan Zhang

Beijing University of Aeronautics and Astronautics, Beijing, People’s Republic of China

J. Eng. Gas Turbines Power 114(1), 82-88 (Jan 01, 1992) (7 pages) doi:10.1115/1.2906310 History: Received December 13, 1989; Online April 24, 2008

Abstract

The effect of dense spray on drop size measurement by light scattering technology was studied using a Malvern instrument with five duplicated internal mixing airblast atomizers aligned with a laser beam. The correction factor data for multiple scattering were obtained. By regression analysis, an empirical equation was obtained that correlated the correction factor as a function of obscuration (OBS), Sauter mean diameter under dilute spray condition (SMD0 ), and drop size distribution parameter for Rosin-Rammler distribution under dilute spray conditions (N0 ). The experimental data showed definitely that the correction factor is not only a function of OBS and SMD0 , as proposed by Dodge, but also is a function of N0 . The correlation fits the experimental data very well, and can be used for practical purposes to correct the data from the Malvern drop sizer at high obscuration conditions.

Copyright © 1992 by The American Society of Mechanical Engineers
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