The Effects of Leading-edge Suction on Hydrodynamic Performance and Cavitation Performance of Hydrofoil

摘要

In order to study the effects of leading-edge suction on hydrodynamic performance and cavitation performance of hydrofoil,this paper applied FLUENT software for the system factors analysis.The variational conditions of lift and drag coefficients,and lift drag ratio were analyzed while suction inlet was added at leading-edge of hydrofoil.The effect on stalling angle was also studied.The results have shown that the suction inlet can increase the stalling angle,enlarge the stable working angle limit,enhance lift drag ratio,and improve the efficiency of the hydrofoil.This paper also calculated NACA0012 airfoil and its leading-edge suction hydrofoil while considering both steady and unsteady cavitating flow.The results have shown that the suction inlet can make the cavitation bubble size decrease,and reduce the influence area of cavitation.