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Initial drop size and velocity distributions for airblast coaxial atomizersPhase Doppler measurements were used to determine initial drop size and velocity distributions after a complete disintegration of coaxial liquid jets. The Sauter mean diameter (SMD) distribution was found to be strongly affected by the structure and behavior of the preceding liquid intact jet. The axial measurement stations were determined from the photographs of the coaxial liquid jet at very short distances (1-2 mm) downstream of the observed break-up locations. Minimum droplet mean velocities were found at the center, and maximum velocities were near the spray boundary. Size-velocity correlations show that the velocity of larger drops did not change with drop size. Drop rms velocity distributions have double peaks whose radial positions coincide with the maximum mean velocity gradients.
Document ID
19910070242
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Eroglu, H.
(Carnegie-Mellon Univ. Pittsburgh, PA, United States)
Chigier, N.
(Carnegie Mellon University Pittsburgh, PA, United States)
Date Acquired
August 14, 2013
Publication Date
September 1, 1991
Publication Information
Publication: ASME, Transactions, Journal of Fluids Engineering
Volume: 113
ISSN: 0098-2202
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
91A54865
Funding Number(s)
CONTRACT_GRANT: NAG8-126
Distribution Limits
Public
Copyright
Other

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