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Droplet sizes and velocities in vaporizing spraysA pulse height laser Doppler anemometer particle sizing technique has been refined to permit simultaneous particle size and velocity measurements in sprays. The improvements include (1) the use of a specially tailored 'top hat' light distribution, to provide unambiguous particle diameter-signal amplitude relations, (2) the use of back scattered light collection, and (3) the utilization of Mie theory to compute the relations between signal amplitude and particle diameter, in the backscatter mode. Twin-fluid atomized kerosene sprays have been investigated using the new technique. In these sprays distributions have been mapped of mean droplet diameters, droplet size distributions, and the local correlations between droplet diameters and velocities. The data show the variation of spray structure with atomizer input parameters, the preferential vaporization of smaller droplets, and the differing trajectories of the large and small droplets.
Document ID
19840031758
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Yule, A. J.
(University of Manchester Institute of Science and Technology Manchester, United Kingdom)
Ereaut, P. R.
(CPF Research Stockport, Ches., United Kingdom)
Ungut, A.
(Shell Research, Ltd., Thornton Research Centre Chester, United Kingdom)
Date Acquired
August 12, 2013
Publication Date
December 1, 1983
Publication Information
Publication: Combustion and Flame
Volume: 54
ISSN: 0010-2180
Subject Category
Instrumentation And Photography
Accession Number
84A14545
Funding Number(s)
CONTRACT_GRANT: SERC-GR/A/76382
CONTRACT_GRANT: NSG-7517
Distribution Limits
Public
Copyright
Other

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