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Article: Numerical simulation of flow around cylinder with an upstream rod in tandem at low Reynolds numbers

TitleNumerical simulation of flow around cylinder with an upstream rod in tandem at low Reynolds numbers
Authors
KeywordsAerodynamics
Cylinder
In Tandem
Low R E Number
Issue Date2006
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/apor
Citation
Applied Ocean Research, 2006, v. 28 n. 3, p. 183-192 How to Cite?
AbstractThis study is concerned with the mechanism of the formation and the convection of vortices shedding from the cylinder with an upstream rod. The aerodynamic characteristics of the rod and cylinder are modelled in two dimensions by using Fluent® with laminar flow. It is found that the mean drag and the lift fluctuation of the cylinder can be reduced by the upstream rod, especially in the cavity flow mode with the rod diameters d / D = 0.3 and 0.5 (here d and D are the diameters of the rod and the cylinder, respectively). With rod diameters d / D = 0.3 and 0.5, the simulation indicates that there are two flow modes of the flow field around the rod and cylinder, which appear with the variation of the center-to-center spacing ratio L / D: the cavity flow mode and the wake impinge mode. There is a pair of standing vortices between the rod and the cylinder in the cavity mode, which results in the pressure decrease on the windward side of the cylinder. It is found that the characteristics of the flow significantly depend on the spacing ratio L / D. Instantaneous flow fields, force fluctuation, force spectrum and so on are presented to identify the flow modes and to understand the underlying mechanism of the cylinder drag reduction. © 2006 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/156874
ISSN
2015 Impact Factor: 1.382
2015 SCImago Journal Rankings: 1.315
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZhang, PFen_US
dc.contributor.authorWang, JJen_US
dc.contributor.authorHuang, LXen_US
dc.date.accessioned2012-08-08T08:44:22Z-
dc.date.available2012-08-08T08:44:22Z-
dc.date.issued2006en_US
dc.identifier.citationApplied Ocean Research, 2006, v. 28 n. 3, p. 183-192en_US
dc.identifier.issn0141-1187en_US
dc.identifier.urihttp://hdl.handle.net/10722/156874-
dc.description.abstractThis study is concerned with the mechanism of the formation and the convection of vortices shedding from the cylinder with an upstream rod. The aerodynamic characteristics of the rod and cylinder are modelled in two dimensions by using Fluent® with laminar flow. It is found that the mean drag and the lift fluctuation of the cylinder can be reduced by the upstream rod, especially in the cavity flow mode with the rod diameters d / D = 0.3 and 0.5 (here d and D are the diameters of the rod and the cylinder, respectively). With rod diameters d / D = 0.3 and 0.5, the simulation indicates that there are two flow modes of the flow field around the rod and cylinder, which appear with the variation of the center-to-center spacing ratio L / D: the cavity flow mode and the wake impinge mode. There is a pair of standing vortices between the rod and the cylinder in the cavity mode, which results in the pressure decrease on the windward side of the cylinder. It is found that the characteristics of the flow significantly depend on the spacing ratio L / D. Instantaneous flow fields, force fluctuation, force spectrum and so on are presented to identify the flow modes and to understand the underlying mechanism of the cylinder drag reduction. © 2006 Elsevier Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/aporen_US
dc.relation.ispartofApplied Ocean Researchen_US
dc.subjectAerodynamicsen_US
dc.subjectCylinderen_US
dc.subjectIn Tandemen_US
dc.subjectLow R E Numberen_US
dc.titleNumerical simulation of flow around cylinder with an upstream rod in tandem at low Reynolds numbersen_US
dc.typeArticleen_US
dc.identifier.emailHuang, LX:lixi@hku.hken_US
dc.identifier.authorityHuang, LX=rp00119en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1016/j.apor.2006.08.003en_US
dc.identifier.scopuseid_2-s2.0-33846696690en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33846696690&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume28en_US
dc.identifier.issue3en_US
dc.identifier.spage183en_US
dc.identifier.epage192en_US
dc.identifier.isiWOS:000244635900003-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridZhang, PF=8639498000en_US
dc.identifier.scopusauthoridWang, JJ=25722396800en_US
dc.identifier.scopusauthoridHuang, LX=7404735514en_US

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