Elsevier

IFAC-PapersOnLine

Volume 50, Issue 1, July 2017, Pages 12291-12295
IFAC-PapersOnLine

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

https://doi.org/10.1016/j.ifacol.2017.08.2475Get rights and content

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.

Keywords

Flow control
Closed-loop control
Machine learning
Genetic programming

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