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Title: Wake structure for flow past and through a porous square cylinder
Authors: Yu, P. 
Zeng, Y. 
Lee, T.S. 
Bai, H.X.
Low, H.T. 
Keywords: Detached recirculating wake
Fluid-porous interface
Porous square cylinder
Issue Date: Apr-2010
Citation: Yu, P., Zeng, Y., Lee, T.S., Bai, H.X., Low, H.T. (2010-04). Wake structure for flow past and through a porous square cylinder. International Journal of Heat and Fluid Flow 31 (2) : 141-153. ScholarBank@NUS Repository.
Abstract: Numerical simulations have been performed for the flow past and through a porous square cylinder over a wide range of Reynolds numbers (1 ≤ Re ≤ 50) and Darcy numbers (10-6 ≤ Da ≤ 10-1). It is found that the recirculating wake existing downstream of the cylinder is completely detached from the body under a certain range of parameters. The size and the location of the wake mainly depend on Re and Da. Specially, the wake may initially increase but then decrease in size with an increase in Re, and eventually disappear when the Reynolds number is sufficiently large. The variation of the critical Reynolds number for the onset of recirculating wake as a function of Darcy number is summarized. The results also show that in the range of Da investigated, different from that of the solid cylinder, the recirculating wake is initially developed downstream of the porous cylinder, but not on the surface of it. © 2009 Elsevier Inc. All rights reserved.
Source Title: International Journal of Heat and Fluid Flow
ISSN: 0142727X
DOI: 10.1016/j.ijheatfluidflow.2009.12.009
Appears in Collections:Staff Publications

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