Cavitation on hydrofoils with sinusoidal leading edge

[摘要] Cavitation characteristics of hydrofoils with sinusoidal leading edge were examined experimentally at a Reynolds number of 7.2 × 105. The hydrofoils had an underlying NACA 634-021 profile and an aspect ratio of 4.3. The sinusoidal leading edge geometries included three amplitudes of 2.5%, 5%, and 12% and two wavelengths of 25% and 50% of the mean chord length. Results revealed that cavitation on the leading edge-modified hydrofoils existed in pockets behind the troughs whereas the baseline hydrofoil produced cavitation along its entire span. Moreover, cavitation on the modified hydrofoils appeared at consistently lower angles of attack than on the baseline hydrofoil.

[发布机构] Mechanical Engineering, California State University, Northridge; CA; 91330, United States^1

[关键词] Angles of attack;Cavitation characteristics;Chord lengths;Sinusoidal leading edges;Two wavelength