Drag Reduction by Ejecting Additive Solutions Into Pure-Water Boundary Layer

[+] Author and Article Information
Jin Wu, M. P. Tulin

HYDRONAUTICS, Inc., Laurel, Md.

J. Basic Eng 94(4), 749-754 (Dec 01, 1972) (6 pages) doi:10.1115/1.3425541 History: Received November 14, 1971; Online October 27, 2010


Drag reduction caused by ejecting additive solutions from a slot into a pure-water boundary layer on a flat plate has been systematically studied. Results include drag measurements for a plane boundary, smooth and rough, with various openings of the slot and with various concentrations and discharges of the ejected additive solution. Conclusions have been drawn on the additive requirement in external flows and on the ejection technique for an optimum drag reduction.

Copyright © 1972 by ASME
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