Advanced optical methods, specifically time-resolved particle image velocimetry (PIV), were employed to analyse the flow around a NACA 0012 airfoil. The airfoil was set at a 17-degree angle of attack, with a circular microcylinder (d/c = 0.01) placed at three positions ahead of the leading edge. The results demonstrate that positioning a microcylinder at an optimal distance can significantly alter the flow field around the airfoil. This study presents a detailed physical analysis of flow fields, utilizing streamlines and vortex structures to elucidate flow control mechanisms. The findings highlight the potential for enhancing the aerodynamic properties of airfoils, and wind turbines. By integrating microcylinders, the experiment offers a novel approach to the fundamental physics of flow control, showcasing innovative techniques in both general physics and optics, with promising applications in aerodynamics and optical diagnostics.