Evaluating the effect of unsteady air flow on a slotted aerofoil of wind turbines

In this study, three types of aerofoils were examined at various angles attack and a steady value then fluctuated air flow. Then, the findings compared to XFOIL prediction results. The experimental simulation results consistent some extent with shape chosen was modified by making slot through blade aerofoil studying their effect on aerodynamics shape. slotted studied as it faced wind revealed that increase in attack, lift force increased approximated its maximum began decrease slot. During calculations, case study for number elements done obtain best mesh. simulations conducted using ANSYS CFD Reynolds 106 AOA equals (0°, 4°, 8°, 10°, 12°, 15°, 16°, 17°, 18°) shapes which are without slot, two symmetrical, NACA 0012 0015, one asymmetrical, is 4415. (existence an opening after 40% from leading edge) 0015 aerofoil, simulated.