Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/7550
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | - |
dc.creator | Zhou, Y | - |
dc.creator | Zhang, HJ | - |
dc.creator | Yiu, MW | - |
dc.date.accessioned | 2015-06-23T09:12:28Z | - |
dc.date.available | 2015-06-23T09:12:28Z | - |
dc.identifier.issn | 0022-1120 | - |
dc.identifier.uri | http://hdl.handle.net/10397/7550 | - |
dc.language.iso | en | en_US |
dc.publisher | Cambridge Univ Press | en_US |
dc.title | The turbulent wake of two side-by-side circular cylinders | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 303 | - |
dc.identifier.epage | 332 | - |
dc.identifier.volume | 458 | - |
dc.identifier.doi | 10.1017/S0022112002007887 | - |
dcterms.abstract | This work is an experimental study of the turbulent vortex structures, and heat and momentum transport in the wake of two side-by-side circular cylinders. The spacing T between the cylinder axes was varied from 1.5d to 3d (d is the cylinder diameter). Both cylinders were slightly heated. A movable three-wire probe measured the velocity and temperature fluctuations, and an X-wire provided a phase reference. Measurements were conducted at x/d = 10, 20 and 40 at a Reynolds number of 5800 (based on d and the free-stream velocity U ∞). At T/d = 1.5, the phase-averaged velocity and temperature fields display a single vortex street. The two rows of vortices exhibit a significant difference in the maximum vorticity, size and lateral distance from the flow centreline. As T/d is increased to 3.0, the flow is totally different. Two antiphase streets occur initially. They are less stable, with vortices weakening faster, than the street at T/d = 1.5. By x/d = 40, one street only is identifiable. Effective vorticity flux density indicates that, while the outer vortex nearer to the free stream interacts largely with the adjacent oppositely signed inner vortices located near the flow centreline, the inner vortex interacts with the cross-stream inner vortices as well as with adjacent outer vortices. As a result, vorticity associated with the inner vortex is annihilated quicker than that associated with the outer vortex, leading to the early disappearance of inner vortices and formation of a single street. The contribution of the coherent motion of various Reynolds-averaged quantities such as the momentum and heat fluxes has also been quantified and discussed in conjunction with the vortex structures of the flow and temperature fields. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Journal of fluid mechanics, 2002, v. 458, p. 303-332 | - |
dcterms.isPartOf | Journal of Fluid Mechanics | - |
dcterms.issued | 2002 | - |
dc.identifier.isi | WOS:000175786800013 | - |
dc.identifier.scopus | 2-s2.0-0037053477 | - |
dc.identifier.rosgroupid | r08005 | - |
dc.description.ros | 2001-2002 > Academic research: refereed > Publication in refereed journal | - |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | OA_IR/PIRA | en_US |
dc.description.pubStatus | Published | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Zhou_Turbulent_Wake_Cylinders.pdf | 3.99 MB | Adobe PDF | View/Open |
Page views
148
Last Week
0
0
Last month
Citations as of Oct 1, 2023
Downloads
441
Citations as of Oct 1, 2023
SCOPUSTM
Citations
194
Last Week
0
0
Last month
1
1
Citations as of Sep 28, 2023
WEB OF SCIENCETM
Citations
166
Last Week
1
1
Last month
1
1
Citations as of Sep 28, 2023

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