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Analysis of Unsteady flows past bluff bodies
AbstractIn order to investigate the vortex shedding phenomenon in the lee of bluff bodies. unsteady flow measurements were undertaken using a two-component laser Doppler anemometer (LDA). The examination of the interaction process between the two separating free shear layers in the lee of a vertical flat plate model demonstrates the complexity of the physics of separated flows. Disturbances in the development of one separating free shear layer, induced by the introduction of a bottom plate, initiate changes in the frequency characteristics of the vortex shedding process. The flow reacts on the gradual momentum-reduction in the separating free shear layers by a gradual enlargement of the streamwise extension of the separated flow region. The drag coefficient of the flat plate model simultaneously decreases.
Analysis of Unsteady flows past bluff bodies
AbstractIn order to investigate the vortex shedding phenomenon in the lee of bluff bodies. unsteady flow measurements were undertaken using a two-component laser Doppler anemometer (LDA). The examination of the interaction process between the two separating free shear layers in the lee of a vertical flat plate model demonstrates the complexity of the physics of separated flows. Disturbances in the development of one separating free shear layer, induced by the introduction of a bottom plate, initiate changes in the frequency characteristics of the vortex shedding process. The flow reacts on the gradual momentum-reduction in the separating free shear layers by a gradual enlargement of the streamwise extension of the separated flow region. The drag coefficient of the flat plate model simultaneously decreases.
Analysis of Unsteady flows past bluff bodies
Leder, A. (author) / Geropp, D. (author)
Journal of Wind Engineering and Industrial Aerodynamics ; 49 ; 329-338
1993-01-01
10 pages
Article (Journal)
Electronic Resource
English
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