Open and closed-loop control of a triangular bluff body using rotating cylinders

Abstract : The active control of vortex shedding from a bluff body consisting of three rotating cylinders in triangular arrangement is studied numerically and experimentally. The flow is characterized at low Reynolds number Re ∼ 4000 − 6000. Open-loop cases are considered to understand the influence of maximum rotation rate Ω and the non-dimensional forcing frequency F ∗ , scaled by the cylinder radius R and the free-stream velocity U ∞ . Feedback control is considered by acquiring the hot-wire sensor signal in the wake and using it for the cylinders rotation speeds update. Adaptive and robust controllers are also be designed for the closed-loop control. As the parametric space for the controllers parameters is very large, machine learning using genetic programming will be a major technique for the command law optimization.
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https://hal.archives-ouvertes.fr/hal-01856263
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Submitted on : Friday, August 10, 2018 - 1:36:25 PM
Last modification on : Monday, February 10, 2020 - 6:14:08 PM

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  • HAL Id : hal-01856263, version 1

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C. Raibaudo, P. Zhong, Robert J. Martinuzzi, Bernd R. Noack. Open and closed-loop control of a triangular bluff body using rotating cylinders. World Congress of the International Federation of Automatic Control, Elsevier, Jul 2017, Toulouse, France. ⟨hal-01856263⟩

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