Active flow control of a two-dimensional compressible cavity flow using direct output feedback law - Archive ouverte HAL Accéder directement au contenu
Rapport Année : 2013

Active flow control of a two-dimensional compressible cavity flow using direct output feedback law

Résumé

Acoustic perturbations emitted from a two dimensional compressible cavity flow are analysed and controlled using direct numerical simulations (DNS) and an output feedback law which expresses the actuation (a synthetic jet) velocity as a function of wall pressure fluctuation sensors. To get the feedback control law, a non-linear reduced-order model (ROM) is first built from un-actuated flow fields and flow forced with a large frequency bandwidth actuation. The control law is then determined by a Linear Quadratic Regulator algorithm. The control law implemented in the DNS provides a significant and global noise reduction (up to 10 dB). The actuation law remains efficient for long times, greater than the temporal window of observation used to design the ROM. Actuation of moderate amplitudes generate some non-linear effects but perturbations continue to be damped.
Fichier principal
Vignette du fichier
airiau_10486.pdf (4.12 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04354217 , version 1 (19-12-2023)

Identifiants

  • HAL Id : hal-04354217 , version 1
  • OATAO : 10486

Citer

Christophe Airiau. Active flow control of a two-dimensional compressible cavity flow using direct output feedback law. Fondation de la Recherche pour l’Aeronautique et l’Espace. 2013. ⟨hal-04354217⟩
12 Consultations
3 Téléchargements

Partager

Gmail Facebook X LinkedIn More