Title

Using wind tunnel tests to study pressure distributions around a bluff body: the case of a circular cylinder

Document Type

Article

Publication Date

2010

Publication Source

Transactions on Engineering and Technology Education

Volume

8

Issue

3

Inclusive pages

361-366

Publisher

UNESCO * International Centre for Engineering Education

Place of Publication

Australia

ISBN/ISSN

1446-2257

Peer Reviewed

yes

Abstract

Hands-on exercises were designed and tested in a subsonic wind tunnel to study pressure distributions around a circular cylinder in cross flow. They allowed students to collect their own data and use them to examine how the pressure on the surface of the cylinder changes with two different variables: the location of a given point along the circumference of the middle cross section of the cylinder and the magnitude of the Reynolds number of the flow. Plotted data produced curves very similar to those in the research literature. Detailed examination of results demonstrated how viscous flow behaviour in the upstream half of the cylinder differed from that on its downstream half. The influence of the magnitude of the Reynolds number on the ability of the viscous flow to recover pressure on the downstream side of the cylinder was demonstrated.

Disciplines

Engineering

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