Thin Flowing Liquid Film Thickness Measurement by Laser Induced Fluorescence

[+] Author and Article Information
D. I. Driscoll, W. H. Stevenson

School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907

R. L. Schmitt

Combustion Research Facility, Sandia National Laboratories, Livermore, CA 94550

J. Fluids Eng 114(1), 107-112 (Mar 01, 1992) (6 pages) doi:10.1115/1.2909984 History: Received April 30, 1991; Online May 23, 2008


An optical technique is described for determining, in a physically nondisturbing manner, the thickness of a thin flowing liquid film. The technique is based on measurement of the fluorescent emission induced in the liquid film by absorption of a focused laser beam. Although the technique was developed for measuring liquid film thicknesses on the prefilming surface of an airblast fuel atomizer, it is not limited to this application.

Copyright © 1992 by The American Society of Mechanical Engineers
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