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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

Authors: R. J. Pattenden, S. R. Turnock, X. Zhang

Published in: Experiments in Fluids | Issue 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.

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Title: Measurements of the flow over a low-aspect-ratio cylinder mounted on a ground plane
Authors: R. J. Pattenden
S. R. Turnock
X. Zhang
Publication date: 01-07-2005
Publisher: Springer-Verlag
Published in: Experiments in Fluids / Issue 1/2005
Print ISSN: 0723-4864
Electronic ISSN: 1432-1114
DOI: https://doi.org/10.1007/s00348-005-0949-9

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