Mechanism of Lift Increase of Cavitating Clark Y-11.7% Hydrofoil
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- Ris (Zotero)
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It is known that the lift force produced by hydrofoil slightly increases with some amount of cavitation. In the present study, cavitating flow around a Clark Y-11.7% hydrofoil in a water tunnel is experimentally studied in order to understand the detailed mechanism of lift increase. The experiments are carried out in three angles of attack conditions; 2.0, 8.0 and 20.0 degrees and in various gas content conditions. Although, at 2.0 degrees, the cavitation appearance and time-averaged lift and drag force differ due to differences of gas content, only the cavitation appearance differs at 8.0 degrees. In addition, at 20.0 degrees, the lift and drag force increase just after the inception of cavitation.