Low Reynolds number flow over a square cylinder with a detached flat plate

Ali, Mohamed Sukri Mat, Doolan, Con J. and Wheatley, Vincent (2012) Low Reynolds number flow over a square cylinder with a detached flat plate. International Journal of Heat and Fluid Flow, 36 133-141. doi:10.1016/j.ijheatfluidflow.2012.03.011

Author Ali, Mohamed Sukri Mat
Doolan, Con J.
Wheatley, Vincent
Title Low Reynolds number flow over a square cylinder with a detached flat plate
Journal name International Journal of Heat and Fluid Flow   Check publisher's open access policy
ISSN 0142-727X
Publication date 2012-08-01
Sub-type Article (original research)
DOI 10.1016/j.ijheatfluidflow.2012.03.011
Volume 36
Start page 133
End page 141
Total pages 9
Place of publication Philadelphia, PA, United States
Publisher Elsevier
Language eng
Formatted abstract
A numerical study of the alteration of a square cylinder wake using a detached downstream thin flat plate is presented. The wake is generated by a uniform flow of Reynolds number 150 based on the side length of the cylinder, D. The sensitivity of the near wake structure to the downstream position of the plate is investigated by varying the gap distance (G) along the wake centerline in the range 0 ⩽ G ⩽ 7D for a constant plate length of L = D. A critical gap distance is observed to occur at Gc ≈ 2.3D that indicates the existence of two flow regimes. Regime I is characterised by vortex formation occurring downstream of the gap while for regime II, formation occurs within the gap. By varying the plate length and gap distance, a condition is found where significant unsteady total lift reduction can occur. The root mean square lift reduction is limited by an unsteady stall process on the plate.
Keyword Square cylinder
Flat plate
Cylinder wake
Critical gap
Lift reduction
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2013 Collection
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Citation counts: TR Web of Science Citation Count  Cited 12 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 17 times in Scopus Article | Citations
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Created: Tue, 31 Jul 2012, 02:49:23 EST by Dr Vincent Wheatley on behalf of School of Mechanical and Mining Engineering