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Experiments in Fluids

, 57:158 | Cite as

Feedback control of bimodal wake dynamics

  • Ruiying Li
  • Diogo Barros
  • Jacques Borée
  • Olivier Cadot
  • Bernd R. Noack
  • Laurent Cordier
Letter

Abstract

Feedback control is applied to symmetrize the bimodal dynamics of a turbulent blunt body wake. The flow is actuated with two lateral slit jets and monitored with pressure sensors at the rear surface. The physics-based controller is inferred from preliminary open-loop tests and is capable of symmetrizing the wake. A slight pressure recovery is achieved due to the net balance between the favourable effect of wake symmetrization and adverse effect of shear-layer mixing and vortex shedding amplification.

Keywords

Bluff Body Pressure Recovery Probability Density Function Wake Flow Turbulent Wake 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

We warmly thank J. M. Breux and J. Laumonier for the unconditional support during the experiments. RL and DB are supported by the OpenLab Fluidics between PSA Peugeot Citroën and Institut Pprime.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Institut PPRIMECNRS – Université de Poitiers – ISAE-ENSMAFuturoscope ChasseneuilFrance
  2. 2.LIMSI-CNRS, UPR 3251Orsay CedexFrance
  3. 3.Technische Universität BraunschweigBraunschweigGermany
  4. 4.IMSIA-ENSTA ParisTech, CNRS, CEA, EDFUniversité Paris-SaclayPalaiseau CedexFrance

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