Application of Coanda Effects to a Ship Hydrofoil

초록

A Coanda foil is a high-lift generating device exploiting the phenomena that flow separation is delayed if a high speed jet is applied tangential to the surface and well known to the aerodynamic community. In the present study, a Coanda foil with a flap is investigated to seek the possibility of marine application. Model experiments are carried out both in towing tank and cavitation tunnel and surface pressure distributions, forces and moments acting on the foil are measured at the various angle of attacks and flap angles. The results are also compared to the numerica; ones to show good agreement.