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

  • Authors:

  • J. Tensi;I. Boué;F. Paillé;G. Dury

  • Affiliations:

  • Lab. d'Etudes Aérodynamiques, UMR 6609, Ecole Nationale Supérieure de Mécanique et d'Aérotechnique, Téléport 2, CEDEX, France. e-mail: jean.tensi@lea.ensma.fr;Lab. d'Etudes Aérodynamiques, UMR 6609, Ecole Nationale Supérieure de Mécanique et d'Aérotechnique, Téléport 2, CEDEX, France. e-mail: jean.tensi@lea.ensma.fr;Lab. d'Etudes Aérodynamiques, UMR 6609, Ecole Nationale Supérieure de Mécanique et d'Aérotechnique, Téléport 2, CEDEX, France. e-mail: jean.tensi@lea.ensma.fr;Lab. d'Etudes Aérodynamiques, UMR 6609, Ecole Nationale Supérieure de Mécanique et d'Aérotechnique, Téléport 2, CEDEX, France. e-mail: jean.tensi@lea.ensma.fr

  • Venue:
  • Journal of Visualization
  • Year:
  • 2002

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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.