Advanced Optical Methods in Analysis of Flow Around an Airfoil with a Circular Microcylinder

Abstract

Advanced optical methods, specifically time-resolved particle image velocimetry, were used to analyse the aerodynamics of the NACA0012 airfoil at a 17-degree angle of attack. A circular microcylinder (d/c =0.015) was positioned at three locations ahead of the airfoil's leading edge to examine its effect on the flow dynamics. The results demonstrate that an optimally positioned microcylinder can significantly modify the flow field, enhancing the aerodynamic performance of airfoils and wind turbines. Detailed physical analysis of the flow fields, including streamlines and vortex structures, elucidates the flow control mechanisms. The findings highlight the potential for enhancing the aerodynamic properties of airfoils and wind turbines. The integration of microcylinders represents a novel approach to passive flow control, underscoring the technique's potential to enhance lift and reduce drag. These findings not only deepen our understanding of flow dynamics but also showcase the practical utility of innovative particle image velocimetry techniques in experimental aerodynamics. Consequently, this research contributes to both fundamental physics and the practical applications in aerospace engineering and wind energy optimization.