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Particle image velocimetry of streaky structures in a laminar separation bubble

Boiko, Andrey, V. and Dovgal, Alexander, V. and Hein, Stefan and Henning, Arne and Sorokin, Alexander (2008) Particle image velocimetry of streaky structures in a laminar separation bubble. DLR-Interner Bericht. DLR-IB 224 - 2008 A 20.

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Abstract

Laminar boundary-layer separation at a backward-facing step of a flat plate has been investigated with Particle Image Velocimetry (PIV). The experiments focused on velocity perturbations induced in the separation region by arrays of roughness elements spaced on the model surface close to the separation line. As a result, the perturbed separated-flow flow pattern is clarified being in fairly good agreement with that which was observed through hot-wire measurements performed under similar experimental conditions in similar flow configurations.

Document Type:Monograph (DLR-Interner Bericht)
Title:Particle image velocimetry of streaky structures in a laminar separation bubble
Authors:
AuthorsInstitution or Email of Authors
Boiko, Andrey, V.Institute of Theoretical and Applied Mechanics, Novosibirsk
Dovgal, Alexander, V.Institute of Theoretical and Applied Mechanics, Novosibirsk
Hein, StefanUNSPECIFIED
Henning, ArneUNSPECIFIED
Sorokin, AlexanderInstitute of Theoretical and Applied Mechanics, Novosibirsk
Date:July 2008
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:laminar boundary-layer separation, backward-facing step, flow control, roughness elements, Particle Image Velocimetry
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Helicopters
Institute of Aerodynamics and Flow Technology > Experimental Methods
Deposited By: Dr.-Ing. Stefan Hein
Deposited On:19 Aug 2008
Last Modified:14 Jan 2010 23:51

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