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Nonintrusive optical single-particle counter for measuring the size and velocity of droplets in a sprayA technique for measuring nonintrusively, and in real time, the size and velocity of droplets in a spray is presented. A small beam identifies the center of a larger beam, thus defining a region of almost uniform intensity, and only droplets crossing through such a center are measured. The size is obtained from the absolute scattered light and the velocity from the modulated signal produced by the interferometric pattern. A self-calibrating algorithm is also discussed. Results are presented for a spray of predictable chracteristics.
Document ID
19850034643
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hess, C. F.
(Spectron Development Laboratories, Inc. Costa Mesa, CA, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1984
Publication Information
Publication: Applied Optics
Volume: 23
ISSN: 0003-6935
Subject Category
Instrumentation And Photography
Accession Number
85A16794
Funding Number(s)
CONTRACT_GRANT: F49620-83-C-0060
CONTRACT_GRANT: NAS3-23538
Distribution Limits
Public
Copyright
Other

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