TY - JOUR
T1 - OBSERVATION ON THE VIOLENT CAVITATION VIBRATIONS INDUCED ON HYDROFOIL.
AU - Ito, Y.
AU - Soyama, H.
AU - Oba, R.
PY - 1988
Y1 - 1988
N2 - To make clear the mechanism of catastrophic violent vibrations, the cavitation aspects, the detected accelerations and the acoustic pressure pulses associated with the violent vibrations were systematically observed in a water flow around a Clark Y 11. 7 hydrofoil at various cavitation numbers, angles of incidence and flow velocities. The violent vibrations are accompanied by periodic cavity separation on the hydrofoil of about 17-25 Hz frequency, while the acceleration waves and the pressure pulses beat with almost the same frequency, which is believed to be the beat frequency of the hydrofoil followed by the Karman vortices.
AB - To make clear the mechanism of catastrophic violent vibrations, the cavitation aspects, the detected accelerations and the acoustic pressure pulses associated with the violent vibrations were systematically observed in a water flow around a Clark Y 11. 7 hydrofoil at various cavitation numbers, angles of incidence and flow velocities. The violent vibrations are accompanied by periodic cavity separation on the hydrofoil of about 17-25 Hz frequency, while the acceleration waves and the pressure pulses beat with almost the same frequency, which is believed to be the beat frequency of the hydrofoil followed by the Karman vortices.
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M3 - Article
AN - SCOPUS:0023862253
SN - 0370-5315
VL - 55
SP - 35
EP - 47
JO - Reports of the Institute High Speed Mechanics, Tohoku University
JF - Reports of the Institute High Speed Mechanics, Tohoku University
ER -