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arXiv · 2009.09299

Closed-loop control of forced turbulent jets

Igor A. Maia·Peter Jordan·André V. G. Cavalieri·Eduardo Martini·Flávio Silvestre
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Abstract

Closed-loop control of turbulent flows is a challenging problem with important practical and fundamental implications. We perform closed-loop control of forced, turbulent jets based on a wave-cancellation strategy. The study is motivated by the success of recent studies in applying wave cancellation to control instability waves in transitional boundary layers and free-shear flows. Using a control law obtained through a system-identification technique, we successfully implement wave-cancellation-based, closed-loop control, achieving order-of-magnitude attenuations of velocity fluctuations. Control is shown to reduce fluctuation levels over an extensive streamwise range.

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Igor A. Maia, Peter Jordan, André V. G. Cavalieri, Eduardo Martini, Flávio Silvestre. 2020-09-19. Closed-loop control of forced turbulent jets. https://arxiv.org/abs/2009.09299

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