Modification of the Wake behind a Circular Cylinder by Using Synthetic Jets

Article type: Research Article

Authors: Tensi, J. | Boué, I. | Paillé, F. | Dury, G.

Affiliations: Laboratoire d'Etudes Aérodynamiques, UMR 6609, Ecole Nationale Supérieure de Mécanique et d'Aérotechnique, Téléport 2, 1 Avenue Clément Ader, B. P. 40 109, 86961 Futuroscope Chasseneuil CEDEX, France. e-mail : [email protected]

Abstract: Experimental tests were conducted to control the flow around a cylinder by means of unsteady blowing (synthetic jet) through a single slot disposed on the wall of the model. The flow Reynolds number (based on the diameter of the model) was R_D = 10^5. The efficiency of the synthetic jet is quantified in terms of delaying separation and modifying the drag coefficient. The investigations were of three types: measurements of the mean pressure distribution, wall visualizations of the separation line position and measurements of the mean flow-field in the wake.

Keywords: cylinder, separation, actuator, synthetic jet, flow control

Journal: Journal of Visualization, vol. 5, no. 1, pp. 37-44, 2002