2020/09/19 by Igor A. Maia, Maia, Igor A., Peter Jordan +6
Engineering · #Aerodynamics and Acoustics in Jet Flows #Combustion and flame dynamics #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Fluid Dynamics and Turbulent Flows
paper · doi:10.48550/arxiv.2009.09299
openalex publication_date 2020/09/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.