Experiments on stream-wise streaky structures in a laminar separation bubble
Boiko, Andrey V. and Dovgal, Alexander V. and Hein, Stefan (2005) Experiments on stream-wise streaky structures in a laminar separation bubble. DLR-Interner Bericht. DLR-IB 224-2005 A 18, 27 S.
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Wind-tunnel data on stationary streaky structures developing in a laminar flow behind backward-facing step on a flat plate are reported. The streaks are generated in a controlled manner by three-dimensional surface humps placed periodically close to the separation line and spaced in the span-wise direction. The mean flow distortions of the separation region created in this way are investigated through hot-wire measurements. As a result, details on evolution of the stationary perturbations in the separation region are elucidated as well as their effects upon the separated flow which are of interest due to elaboration of perspective methods for control of low-speed aerodynamics.
|Document Type:||Monograph (DLR-Interner Bericht)|
|Title:||Experiments on stream-wise streaky structures in a laminar separation bubble|
|In ISI Web of Science:||No|
|Number of Pages:||27|
|Keywords:||Separation bubble, backward-facing step, transient growth, streaky structures, flow instability, separation control|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Aeronautics|
|HGF - Program Themes:||L AR - Aircraft Research|
|DLR - Research area:||Aeronautics|
|DLR - Program:||L AR - Aircraft Research|
|DLR - Research theme (Project):||L - Flight Physics|
|Institutes and Institutions:||Institute of Aerodynamics and Flow Technology > Helicopters|
|Deposited By:||Elisabeth Winkels|
|Deposited On:||24 Jan 2006|
|Last Modified:||14 Jan 2010 20:12|
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