A comparison between the wake behind finned and foamed circular cylinders in cross-flow

Khashehchi, M., Hooman, K., Roesgen, T. and Ooi, A. (2012). A comparison between the wake behind finned and foamed circular cylinders in cross-flow. In: , 15th International Symposium on Flow Visualization. 15th International Symposium on Flow Visualization, Minsk, Belarus, (). 25-28 June 2012.

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Name Description MIMEType Size Downloads
Author Khashehchi, M.
Hooman, K.
Roesgen, T.
Ooi, A.
Title of paper A comparison between the wake behind finned and foamed circular cylinders in cross-flow
Conference name 15th International Symposium on Flow Visualization
Conference location Minsk, Belarus
Conference dates 25-28 June 2012
Proceedings title 15th International Symposium on Flow Visualization   Check publisher's open access policy
Publication Year 2012
Sub-type Fully published paper
Total pages 10
Collection year 2013
Language eng
Formatted Abstract/Summary The flow pattern behind a circular cylinder is associated with various instabilities. These
instabilities are characterized by the Reynolds number and include the wake, separated shear layer
and boundary layer. Depending on the physical application of the cylinder, increasing the level of
turbulence on the surface of the cylinder would be a target for drag reduction or heat transfer
enhancement. Particle Image Velocimetry (PIV) has been carried out to investigate the wake region
behind a foamed and a finned cylinder. The purpose of this analysis is to develop one- and two-point
correlations and to investigate the flow characteristics for these two cases. The experiments are
conducted for a wide range of Reynolds numbers (based on the mean air velocity and the cylinder
diameter) from 1000 to 10000. Two dimensional results of planar PIV reveal the important aspects
of the local flow features of the circular finned and foamed cylinders. These include turbulent
boundary layer development over the surface and a delayed separation of the flow resulting in a
smaller wake size in each case.
Q-Index Code EX
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Conference Paper
Collection: School of Mechanical & Mining Engineering Publications
 
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Created: Fri, 02 Nov 2012, 13:04:51 EST by Katie Gollschewski on behalf of School of Mechanical and Mining Engineering