The effect of porous surfaces on wings in unsteady flows

The porous structure holds great potential for modifying the performance of various aerodynamic applications as a passive flow control method. The focus of this study was to investigate the effect of porous surfaces on wings in unsteady flows caused by wing motion, active flow control actuation, and their combination, utilizing both experimental methods and numerical simulations. Wind tunnel experiments of a nominally 2-D wing undergoing unsteady motion with plasma actuators were conducted, and a 2-D Direct Numerical Simulation (DNS) on the same setup was carried out. Our analysis will compare the aerodynamic loads, such as lift, drag, and pitching moment, between wings with and without porous surfaces. Additionally, flow field analysis will be conducted to explore the associated flow characteristics and provide insights for the future design of wings incorporating porous surfaces.