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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/4997

Title: Effect of trailing edge suction on coherent structures in near wake
Authors: SHARMA, SD
SAHOO, RK
Keywords: circular-cylinder
turbulence structure
Issue Date: 1998
Publisher: ASME-AMER SOC MECHANICAL ENG
Citation: JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 120(2), 378-384
Abstract: Experimental results, obtained from her-wire measurements using a conditional sampling technique, demonstrate feasibility of controlling large-scale spanwise vortices (coherent structures) in the near wake region behind a rectangular base by means of suction through a slit at just one of the trailing edges. The suction thus employed, is found to influence the near wake topology with strong asymmetry and disturb the net vorticity balance. Moreover, a significant reduction in the base drag is achieved as a consequence of the trailing edge suction. The mechanism of the drag reduction is understood to lie in a marked change in the wake dynamics including attenuation in the size and strength of the coherent structures.
URI: http://dx.doi.org/10.1115/1.2820658
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4997
http://hdl.handle.net/10054/4997
ISSN: 0098-2202
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