Performance of a Supercavitating Jet-Flapped Hydrofoil Operating at Arbitrary Submergence

[+] Author and Article Information
R. Oba, K. Sato

Institute of High Speed Mechanics, Tohoku University, Sendai, Japan

J. Fluids Eng 97(4), 475-481 (Dec 01, 1975) (7 pages) doi:10.1115/1.3448080 History: Received February 05, 1975; Online October 12, 2010


The flow around an arbitrary supercavitating, jet-flapped hydrofoil operating at an arbitrary submergence is analyzed by a second order theory and the following results are obtained; (i) The hydrofoil performance data are shown for various submergences and jet operating conditions. (ii) The flap effects are highly dependent on the submergence as well as the hydrofoil shape. (iii) Operation of the jet flap results in an increase in the cavity thickness so that the hydrofoil thickness can be increased. (iv) Especially at the shallower submergences, the performance, as well as the flow pattern, changes strikingly with changes in submergence.

Copyright © 1975 by ASME
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