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Control of the near-wake flow around a circular cylinder with electrohydrodynamic actuators

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Abstract

We analysed the modifications of the near wake of a circular cylinder (2,300< Re <58,000) when the flow was perturbed steadily using an electrohydrodynamic actuator. Two electrodes flush-mounted on the surface of the cylinder were excited with DC power supplies to create a plasma sheet contouring the body. The discharge produced an electric force and changed the physical properties in the fluid layers at close vicinity to the surface. This plasma sheet diminished the base pressure, modified the size of the mean recirculation region and produced an increase in the shear stresses of the layers bounding the contour of this region.

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Acknowledgements

This research was supported by the UBACYT AI-03 and PICT 2000–2001 12-482 grants from the Argentine government.

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Authors and Affiliations

  1. Fluid Dynamics Laboratory, Department of Mechanical Engineering, Faculty of Engineering, University of Buenos Aires, CONICET, Buenos Aires, Argentina

    G. Artana & R. Sosa

  2. Laboratoire d’Etudes Aerodynamiques (UMR 6609 CNRS), University of Poitiers, Futuroscope Cedex, France

    E. Moreau & G. Touchard

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  1. G. Artana
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  2. R. Sosa
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  3. E. Moreau
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  4. G. Touchard
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Correspondence to G. Artana.

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Artana, G., Sosa, R., Moreau, E. et al. Control of the near-wake flow around a circular cylinder with electrohydrodynamic actuators. Exp Fluids 35, 580–588 (2003). https://doi.org/10.1007/s00348-003-0704-z

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  • DOI: https://doi.org/10.1007/s00348-003-0704-z

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