The prediction of aerodynamic characteristics and smart flap of airfoil under the ground effect have been carried out by the integration of computational fluid dynamics. Considering different types of beams, a parametric bending profile of a smart flap is designed. Cantilever beam with uniformly varying load with roller support at the free end is considered in here. A pressure-based implicit procedure is utilized to solve Navier-Stokes equations on a nonorthogonal mesh with collocated finite volume formulation that is used to simulate. The boundedness criteria for this procedure are determined by Normalized Variable diagram (NVD) scheme. The procedure incorporates the eddy-viscosity turbulence model. First, the method is validated against experimental data. Then, the SIMPLE algorithm is applied for turbulent aerodynamic flows around airfoil with smart and conventional flaps. The results of two flaps are compared for different flap length, flap angle and ground clearance. It was found that: 1- The pressure coefficient distribution in smart flap is smoother than conventional flap. 2- Lift-drag ratio in smart flap is higher than conventional flap. 3- The maximum lift-drag ratio is at flap angle 7.5º. 4- The minimum ground clearance has the highest lift-drag ratio. 5- The increasing of flap length lead to the increasing lift-drag ratio.
کلید واژگان :Smart-Ground effect-Aerodynamic-Flap
ارزش ریالی : 1200000 ریال
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