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Effect of trailing edge suction on coherent structures in near wake

DSpace at IIT Bombay

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Field Value
 
Title Effect of trailing edge suction on coherent structures in near wake
 
Creator SHARMA, SD
SAHOO, RK
 
Subject circular-cylinder
turbulence structure
 
Description 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.
 
Publisher ASME-AMER SOC MECHANICAL ENG
 
Date 2011-07-18T17:16:51Z
2011-12-26T12:50:44Z
2011-12-27T05:36:46Z
2011-07-18T17:16:51Z
2011-12-26T12:50:44Z
2011-12-27T05:36:46Z
1998
 
Type Article
 
Identifier JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 120(2), 378-384
0098-2202
http://dx.doi.org/10.1115/1.2820658
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4997
http://hdl.handle.net/10054/4997
 
Language en