Feedback control of bimodal wake dynamics

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

doi:10.1007/s00348-016-2245-2

Feedback control of bimodal wake dynamics

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

Aerospace Engineering and Mechanics

Research output: Contribution to journal › Letter › peer-review

45 Scopus citations

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.

Original language	English (US)
Article number	158
Journal	Experiments in Fluids
Volume	57
Issue number	10
DOIs	https://doi.org/10.1007/s00348-016-2245-2
State	Published - Oct 1 2016

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© 2016, Springer-Verlag Berlin Heidelberg.

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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.",

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AU - Barros, Diogo

AU - Borée, Jacques

AU - Cadot, Olivier

AU - Noack, Bernd R.

AU - Cordier, Laurent

PY - 2016/10/1

Y1 - 2016/10/1

N2 - 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.

AB - 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.

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Feedback control of bimodal wake dynamics

Abstract

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