Aerodynamic effect of 3D pattern on airfoil

It is known from recent observations that the textured surface plays a role in reducing the drag force and increasing the lift force of a moving body. Comparing the numerical simulation between smooth surface and textured surface in this study, we also observe that the textured surface reduces the drag coefficient and increases the lift coefficient of the surface. As for the two simulation models performed in this study, we use the modified NACA0018 model for the basic airfoil configurations. After the simulation using Fluent, the results about the two models are mutually compared, and we found that the textured airfoils can decrease the drag coefficient and increase the lift coefficient dramatically. We also found that there exists an optimal angle, at which both the drag coefficient decrement and the lift coefficient become maximum. The final goal of this study is to design the airfoil with the reduced drag coefficient and the improved aerodynamic efficiency.