Skip to Main content Skip to Navigation
New interface
Journal articles

The impact of a local perturbation on global properties of a turbulent wake

Abstract : Stationary perturbation techniques are used to investigate the sensitivity of the global properties of the wake behind a bluff body at moderate Re. The entire recirculation bubble is found to be a sensitive region for the global frequency selection and the quality of the synchronization. A striking position is found at its center where synchronization is destroyed and the frequency is increased. High speed particle image velocimetry sheds some light into the underlying mechanisms, which are interpreted in terms of vorticity interaction, flow reattachment, and flow deviation. Strong mean flow modifications are observed to correspond to drastic changes in drag and its fluctuations
Document type :
Journal articles
Complete list of metadata

Cited literature [12 references]  Display  Hide  Download
Contributor : olivier cadot Connect in order to contact the contributor
Submitted on : Monday, November 27, 2017 - 1:49:22 PM
Last modification on : Wednesday, May 11, 2022 - 3:14:03 PM


Files produced by the author(s)




Vladimir Parezanović, Olivier Cadot. The impact of a local perturbation on global properties of a turbulent wake. Physics of Fluids, 2009, 21, pp.071701. ⟨10.1063/1.3184615⟩. ⟨hal-01289971⟩



Record views


Files downloads