representative driven system to interrogate passive dynamics of an airfoil in the wake of a cylinder

Passive motion of an airfoil in the wake a circular cylinder is compared with driven same configuration, through simultaneous measurement both dynamics and surrounding flow field. The passive mounting allows to move transverse (heaving) direction response oncoming forcing, while introducing significant parasitic effects including friction. reproduces important characteristics imperfect motion, validating idealized sinusoidal as model for operating more realistic engineering context. Particle Image Velocimetry (PIV) case then used illuminate structures contributing observed power thrust production cases.