A PIV/PSP Joint Experimental Analysis of a Thin, High Cambered Airfoil at Low Reynolds Number

An experimental test campaign has been performed by means of Pressure Sensitive Paint Technique (PSP) and Particle Image Velocimetry (PIV) on a thin high cambered airfoil at low Reynolds number. These techniques have been selected for their characteristics of lowintrusivity and high spatial resolution. Details of the experimental set-up and results shall be reported. Experimental investigation has been intended to get detailed information about the pressure distribution and the flow field characteristics around and downstream a nonconventional airfoil. Pressure and velocity fields have been integrated to obtain the airfoil lift, drag and aerodynamic moment coefficients in the investigated range of angles of attack. Measurements have been performed in a low-scale open circuit Eiffel type wind tunnel on a 2D wing profile model. The test campaign has been characterized by two Reynolds numbers (200.000 and 300.000) and a model incidence ranging between - -5° and +15° (1° step).