Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 12, 2016 - November 13, 2016
The aim of this study is to clarify effects of dissolved air on cavitating flow around an isolated Clark Y hydrofoil. We conducted observations of instantaneous cavity shapes by high-speed camera, measurements of lift and drag forces and number density distribution of bubble nuclei in different conditions of dissolved air at two angles of attack. As a result, the number density of bubble nuclei increased with growth of cavity in high dissolved air condition. On the other hand, such increase is not observed regardless of cavity development in low dissolved air condition. Inception cavitation number and characteristics of lift and drag forces are different between the conditions of dissolved air particularly in the case of small angle of attack.
