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Experiments in Fluids

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01.07.2005 | Originals

Measurements of the flow over a low-aspect-ratio cylinder mounted on a ground plane

verfasst von: R. J. Pattenden, S. R. Turnock, X. Zhang

Erschienen in: Experiments in Fluids | Ausgabe 1/2005

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Abstract

The flow over a finite-height cylinder of aspect ratio 1, with one end mounted on a ground plane and the other end free, has been studied by means of surface flow visualisation, particle image velocimetry (PIV) and surface pressure measurements. The diameter-based Reynolds number was 200,000. The mean flow topology has been identified in three areas: the horseshoe vortex system, the separated flow over the free-end and the wake region. Evidence is shown for the existence of a three-horseshoe vortex system, while the mean flow over the free-end consists of an arch vortex with its bases on the forward half of the free-end. There are two tip vortices coming off the free-end. The wake region is found to be highly unsteady, with considerable variation from the mean flow.

Vorheriger Artikel Particle field characterization by digital in-line holography: 3D location and sizing

Nächster Artikel Nonlinear temporal filtering of time-resolved digital particle image velocimetry data

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Titel: Measurements of the flow over a low-aspect-ratio cylinder mounted on a ground plane
verfasst von: R. J. Pattenden
S. R. Turnock
X. Zhang
Publikationsdatum: 01.07.2005
Verlag: Springer-Verlag
Erschienen in: Experiments in Fluids / Ausgabe 1/2005
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI: https://doi.org/10.1007/s00348-005-0949-9

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