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RESEARCH PAPERS

Experimental Research of the Effects of Sweep on Unsteady Hydrofoil Loadings in Cavitation

[+] Author and Article Information
A. Ihara, H. Watanabe

Institute of Fluid Science, Tohoku University, Sendai, Japan

S. Shizukuishi

Tohoku University, Sendai, Japan

J. Fluids Eng 111(3), 263-270 (Sep 01, 1989) (8 pages) doi:10.1115/1.3243640 History: Received October 06, 1987; Online October 26, 2009

Abstract

An experiment was conducted to investigate the effects of sweep angle on hydrofoil loadings in cavitation. Tests were carried out in a water tunnel on constant-chord full-span hydrofoils at four angles of attack for sweep angle 0, 15, 30, and 45 deg, respectively. The results obtained were that the strong, periodic oscillations which appeared under some conditions of partial cavitation decreased their amplitudes with an increase in sweep angle. Moreover, the lift-drag ratio showed the higher value for the highly swept hydrofoil and remained higher down to some lower cavitation numbers than those for the slightly swept model.

Copyright © 1989 by ASME
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