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Turbulence effects on wind flow over complex terrain

Sherry, Michael and Sheridan, John and Lo Jacono, David Turbulence effects on wind flow over complex terrain. In: Australasian Fluid Mechanics Conference 17 (AFMC), 5-9 Dec 2010, Auckland, New Zealand .

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Official URL: http://www.flair.monash.edu.au/publications/

Abstract

Flow separation experiments over a forward facing step immersed in a turbulent boundary layer subjected to various levels of freestream turbulence intensity have been undertaken in a water channel. Freestream turbulence was generated using two traditional grids and a third, novel tethered sphere design. Planar particle image velocimetry was used to characterise the mean recirculation region. The dynamic of the reattachment length was also investigated. It was found that bluff body geometry effects were dominant over freestream turbulence intensity close to the separation point. Downstream of the separation point, the turbulence level was seen to increase mixing between the high momentum freestream flow and the adverse flow within the recirculation region promoting reattachment.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to Auckland Univerty of Technology editor. The paper was published in Proceedings of the 17th Australasian Fluid Mechanics Conference (Eds: G.D. Mallinson and J.E. Cater, Pub: The University of Auckland, ISBN: 978-0-86869-129-9) - The University of Auckland, Auckland, New Zealand, 5-9 December 2010, Paper 287.
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Monash University (AUSTRALIA)
Laboratory name:
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Deposited By:Catherine THURIOT

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