Open-loop and closed-loop control of separated flows using visual sensors (with A. Giannopoulos, E. Varon, N. Gautier)

Closed-loop control of the separated flow downstream a Backward-Facing Step (BFS) using a pulsed slotted-jet as the actuator and real-time PIV measurement as input :

Recirculation bubble downstream a BFS: natural uncontrolled flow (grey area) together with the controlled flow (black area).

Time serie showing the instantaneous velocity field donwstream the BFS for the uncontrolled and controlled flow:

controlled-uncontrolled_movie