6460

6460

بررسي تجربي و عددي جريان هواي پيرامون ايرفويل حاوي يك فن چرخان

كارشناسي ارشد

مكانيك

بهار 1387

بهار 1387

دكتر محمد حسن شجاعي فرد

Abstract In this research, flow over the airfoil comprising a fan has been studied by experiment and CFD technique. Also, potential flow over the airfoil has been solved by some simplifying assumptions. Results of numerical simulation are in good agreement with the experimental data. For experimental study, a model wing was made and examined in wind tunnel. Aerodynamic coefficients were measured in various free stream conditions such as free stream velocity and angle of attack. Fan rotational speed was the other desired variable. Then, a rectangular flap was added to the wing at the trailing edge and experiments were done again at various flap angles. Aerodynamic coefficients of the airfoil are highly depended on the fan rotational speed. Lift and pitching moment coefficients increase and drag coefficient decreases by fan speed. Flap angle is very effectual on the airfoil performance and by increasing this parameter all the aerodynamic coefficient increase considerably.