Stochastic fluid structure interaction of three dimensional plates facing a uniform flow

Abstract : An experiment of a flat rectangular plate facing a uniform flow at Re= 264000 shows the importance on the base pressure loading of the asymmetric static modes of the turbulent wake. The plate is free to rotate around its small symmetry axis. For plates with aspect ratio κ < 6, the angular position exhibits strong random discontinuities between steady states of non zero angles. The steady states have long time durations, more than one order of magnitude larger than the convective timescale. The discontinuities, comparable to rare and violent events are due to strong fluid forces associated with the drastic global change of the three dimensional wake, mainly the switching between the static asym-metric modes. A clear transition occurs at κ = 6 for which the angular fluctuations are minimum leading for κ > 6 to a classical fluid structure interaction with periodic fluctuations. The transition is supported by a recent global stability analysis of rectangular fixed plates in the laminar regime.
Type de document :
Article dans une revue
Journal of Fluid Mechanics, Cambridge University Press (CUP), 2016, 794 (R1), 〈10.1017/jfm.2016.187〉
Liste complète des métadonnées

Littérature citée [10 références]  Voir  Masquer  Télécharger

https://hal-ensta.archives-ouvertes.fr/hal-01299271
Contributeur : Olivier Cadot <>
Soumis le : jeudi 7 avril 2016 - 14:28:09
Dernière modification le : mardi 6 mars 2018 - 15:56:34
Document(s) archivé(s) le : lundi 14 novembre 2016 - 20:40:16

Fichier

IFS_RSB.pdf
Fichiers produits par l'(les) auteur(s)

Identifiants

Citation

Olivier Cadot. Stochastic fluid structure interaction of three dimensional plates facing a uniform flow. Journal of Fluid Mechanics, Cambridge University Press (CUP), 2016, 794 (R1), 〈10.1017/jfm.2016.187〉. 〈hal-01299271〉

Partager

Métriques

Consultations de la notice

194

Téléchargements de fichiers

147