The Aerodynamics of the Wavy Blade Under the Effect of Fluctuated Wind Flow

In the present study, the influence of the wavy edge blade on aerodynamic characteristics for the flow of blades at Reynolds number (Re) of 8x 10(5) is numerically investigated based on the unsteady wind flow. A study into the aerodynamic characteristics of a wavy NACA0015 aerofoil blade is carried out using ICEM 19.1 and ANSYS fluent. The numerical simulation is conducted then validated by experimental data with steady wind flow. This was achieved by employing similar boundary conditions as Reynold's number at various angles of attack (AOA). While, the unsteady flow was numerically performed at 1 Hz frequncy of wind flow conditions. The main findings from this work show that the wavy blade can behave better in turbulent wind conditions with the maximum lift coefficient of 0.73 compared to 0.621 for the normal blade. However, the findings declare that the wavy blade stalled earlier than the normal one in the unsteady flow case. Similarly, it stalled at 12 degrees angle of attack earlier than the normal one which was stalled at 14 degrees in the steady flow case.