Feedback control of bimodal wake dynamics
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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.
KeywordsBluff Body Pressure Recovery Probability Density Function Wake Flow Turbulent Wake
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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