Response of the near wall turbulence to localized unsteady blowing periodical and dissymetric in time

Sedat F. Tardu (1) , Olivier Léon Doche (1)

1 LEGI - Laboratoire des Écoulements Géophysiques et Industriels [Grenoble]

The active control of the near wall turbulence by suboptimal or optimal strategies is plausible, but it requires unfeasibly dense distribution of the sensors and actuators at the wall. One possible way to remedy to this situation is to go through dual control methods. The latter consist of exciting the near wall turbulence locally to render it more predictable and controllable. Such a strategy has been used by Tardu (1998, 2001) who investigated the reaction of the near wall turbulence to a space localized oscillating blowing sinusoidal in time with small severity.

Mots clés: Active control; Drag Reduction; Localized Unsteady Time Periodical Blowing

Domaines: Mécanique des fluides [physics.class-ph]; Mécanique des fluides [physics.class-ph]

Sedat F. Tardu, Olivier Léon Doche. Response of the near wall turbulence to localized unsteady blowing periodical and dissymetric in time. ICTAM04, Aug 2004, Warsaw, Poland. pas précisé. ⟨hal-00262252⟩