Flow separation control using optical feedback

Vladimir Parezanovic , Andreas Spohn , Laurent Cordier

Flow separation induced by adverse pressure gradients leads in many engineering applications to severe losses and restrictions of operation range. For example, detached flow on wings leads to drag increase and lift decrease, while compressor stall can lead to thrust reduction accompanied by dangerous unsteady loads. The mitigation of flow separation remains, therefore, an ongoing challenge and a quintessential goal of flow control.

Mots clés: shear flows; flow separation; closed-loop control; Kelvin-Helmholtz instability; singular value decomposition

Domaines: Mécanique [physics]

Vladimir Parezanovic, Andreas Spohn, Laurent Cordier. Flow separation control using optical feedback. CFM 2015 - 22ème Congrès Français de Mécanique, Aug 2015, Lyon, France. ⟨hal-03446236⟩