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An experimental investigation of flow fields downstream of solid and porous fences

Yaragal, Subhas C and Ram, Govinda HS and Murthy, Keshava K (1997) An experimental investigation of flow fields downstream of solid and porous fences. In: Journal of Wind Engineering and Industrial Aerodynamics, 66 (2). pp. 127-140.

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Official URL: http://dx.doi.org/10.1016/S0167-6105(97)00015-9


Wind tunnel experiments were conducted under highly turbulent and disturbed flow conditions over a bluff/porous plate with a long splitter plate in its plane of symmetry. The effect of plate porosity on fluctuating pressures measured across and along the separation bubble was studied. In addition to fluctuating pressures, mean-velocity measurements and surface mean-pressure distributions were measured after preliminary flow visualization studies. The Reynolds number based on the width of the two-dimensional body was 2.4 x 10(4). Mean pressures were found to be strongly dependent on porosity. The study also showed that both at the surface and within the flow, the fluctuating pressures showed significant dependence on the porosity of the forebody. A 60% porous fence was found to reduce the fluctuating pressures in the flow field by about 50% in contrast to a solid fence. The results presented in this paper are a part of an ongoing experimental investigation undertaken on solid and porous fences.

Item Type: Journal Article
Publication: Journal of Wind Engineering and Industrial Aerodynamics
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Department/Centre: Division of Mechanical Sciences > Civil Engineering
Date Deposited: 19 Jul 2009 05:30
Last Modified: 01 Mar 2012 07:57
URI: http://eprints.iisc.ac.in/id/eprint/18334

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