Water Tunnel Tests of Naca 4412 and Walchner Profile 7 Hydrofoils in Non-Cavitating and Cavitating Flows

摘要

The results of force and cavitation tests on two hydrofoils in twodimensional flow are presented. The hydrofoils are the NACA 4412 profile and a modified circular arc, flat plate, hydrofoil designated as a Walchner profile 7. The results of experiments performed in wind tunnels and in other water tunnels are presented for comparison. The experiments described in this report are the first tests using the High Speed Water Tunnel two-dimensional working section and the new force balance; therefore, the experimental setup, procedure and methods of data reduction have been described in detail.