Low Reynolds number flow over a square cylinder with a splitter plate

Ali, Mohamed Sukri Mat, Doolan, Con J. and Wheatley, Vincent (2011) Low Reynolds number flow over a square cylinder with a splitter plate. Physics of Fluids, 23 3: 033602-1-033602-12. doi:10.1063/1.3563619


Author Ali, Mohamed Sukri Mat
Doolan, Con J.
Wheatley, Vincent
Title Low Reynolds number flow over a square cylinder with a splitter plate
Journal name Physics of Fluids   Check publisher's open access policy
ISSN 1070-6631
Publication date 2011-03-31
Sub-type Article (original research)
DOI 10.1063/1.3563619
Volume 23
Issue 3
Start page 033602-1
End page 033602-12
Total pages 12
Place of publication United States
Publisher American Institute of Physics
Collection year 2012
Language eng
Abstract Flows over a square cylinder of side length D with and without a splitter plate are numerically investigated at a Reynolds number of 150. The length of the splitter plate is varied systematically from L=0.5D to L=6D so the sensitivity of the flow structure to the inclusion of the splitter plate can be inspected. It is found that the splitter plate introduces a strong hydrodynamic interaction to the near wake of the cylinder and the length of the plate affects significantly the flow structure. The behavior of the flow can be grouped into three regimes. For short plate lengths (0≲L≲D), the free shear layers are convected further downstream before rolling up when the plate length is increased. For intermediate plate lengths (1.25D≲L≲4.75D), a secondary vortex is clearly visible around the trailing edge of the splitter plate and the shear layers begin to roll up closer to the trailing edge. For long plate lengths (L≳5D), a regime is observed in which the free shear layers reattach to the splitter plate. The study also proposes the minimum wake half-width as the length scale for a possible universal Strouhal number, which is found to be valid for 0≤L≤4D. © 2011 American Institute of Physics.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article # 033602

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2012 Collection
 
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Created: Fri, 01 Apr 2011, 14:04:21 EST by Dr Vincent Wheatley on behalf of School of Mechanical and Mining Engineering