The von Kármán street behind a circular cylinder: flow control through synthetic jet placed at the rear stagnation point

• Published in: Journal of fluid mechanics Vol. 901
• Main Authors: Greco, Carlo Salvatore, Paolillo, Gerardo, Astarita, Tommaso, Cardone, Gennaro
• Format: Journal Article
• Language: English
• Published: Cambridge, UK Cambridge University Press 25.10.2020
• Subjects: Asymmetry; Circuits; Circular cylinders; Configurations; Cylinders; Diameters; Digital imaging; Digital particle image velocimetry; Drag coefficient; Drag coefficients; Drag reduction; Flow control; Flow velocity; Fluid dynamics; Fluid flow; JFM Papers; Momentum; Particle image velocimetry; Reynolds number; Stagnation point; Statistical methods; Synthetic jets; Turbulent flow; Two dimensional analysis; Velocity; Velocity distribution; Vortices; Wind tunnels; wakes; vortex interactions; drag reduction

The present paper aims at establishing the synthetic jet technology capabilities in controlling the von Kármán street behind a circular cylinder. The circular cylinder, placed in an open-circuit wind tunnel, presents a slot in its rear position, through which the synthetic jet is issued. The Reynold...