Effect of trailing edge suction on coherent structures in near wake
DSpace at IIT Bombay
View Archive InfoField | Value | |
Title |
Effect of trailing edge suction on coherent structures in near wake
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Creator |
SHARMA, SD
SAHOO, RK |
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Subject |
circular-cylinder
turbulence structure |
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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.
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Publisher |
ASME-AMER SOC MECHANICAL ENG
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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 |
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Type |
Article
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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 |
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Language |
en
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