Please use this identifier to cite or link to this item:
Title: Steady flow around and through a permeable circular cylinder
Authors: Yu, P. 
Zeng, Y.
Lee, T.S. 
Chen, X.B. 
Low, H.T. 
Keywords: Detached recirculating wake
Fluid-porous interface
Permeable cylinder
Issue Date: Mar-2011
Citation: Yu, P., Zeng, Y., Lee, T.S., Chen, X.B., Low, H.T. (2011-03). Steady flow around and through a permeable circular cylinder. Computers and Fluids 42 (1) : 1-12. ScholarBank@NUS Repository.
Abstract: The steady flow around and through a porous circular cylinder was studied numerically. The effects of the two important parameters, the Reynolds and Darcy numbers, on the flow were investigated in details. The recirculating wake existing downstream of the cylinder is found to either penetrate into or be completely detached from the cylinder. It is also found that, contrary to that of the solid cylinder, the recirculating wake develops downstream of or within the porous cylinder, but not from the surface of it. These new findings provide additional evidence to Leal's conclusion (Leal LG. Vorticity transport and wake structure for bluff bodies at finite Reynolds number. Phys Fluids A 1989;1:124) that the appearance of recirculating wakes at finite Reynolds number is due to vorticity accumulation, but not a result of the same physical phenomena associated with separation in boundary layers in adverse pressure gradients. Also presented in the current study are the variation of the critical Reynolds number for the onset of a recirculating wake as a function of Darcy number and the variation of a newly defined parameter, the penetration depth, as a function of the Reynolds number and Darcy number. © 2010.
Source Title: Computers and Fluids
ISSN: 00457930
DOI: 10.1016/j.compfluid.2010.09.040
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.


checked on Oct 30, 2020


checked on Oct 22, 2020

Page view(s)

checked on Oct 24, 2020

Google ScholarTM



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.