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Article: Asymmetric vortex shedding flow past an inclined flat plate at high incidence

TitleAsymmetric vortex shedding flow past an inclined flat plate at high incidence
Authors
KeywordsInclined flat plate
PIV
Vortices
Issue Date2005
PublisherElsevier France, Editions Scientifiques et Medicales. The Journal's web site is located at http://www.elsevier.com/locate/ejmflu
Citation
European Journal Of Mechanics, B/Fluids, 2005, v. 24 n. 1, p. 33-48 How to Cite?
AbstractThis paper reports an experimental investigation of the vortex shedding wake behind a long flat plate inclined at a small angle of attack to a main flow stream. Detailed velocity fields are obtained with particle-image velocimetry (PIV) at successive phases in a vortex shedding cycle at three angles of attack, α=20°, 25° and 30°, at a Reynolds number Re≈5,300. Coherent patterns and dynamics of the vortices in the wake are revealed by the phase-averaged PIV vectors and derived turbulent properties. A vortex street pattern comprising a train of leading edge vortices alternating with a train of trailing edge vortices is found in the wake. The trailing edge vortex is shed directly from the sharp trailing edge while there are evidences that the formation and shedding of the leading edge vortex involve a more complicated mechanism. The leading edge vortex seems to be shed into the wake from an axial location near the trailing edge. After shedding, the vortices are convected downstream in the wake with a convection speed roughly equal to 0.8 the free-stream velocity. On reaching the same axial location, the trailing edge vortex, as compared to the leading edge vortex, is found to possess a higher peak vorticity level at its centre and induce more intense fluid circulation and Reynolds stresses production around it. It is found that the results at the three angles of attack can be collapsed into similar trends by using the projected plate width as the characteristic length of the flow. © 2004 Elsevier SAS. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/129144
ISSN
2015 Impact Factor: 1.418
2015 SCImago Journal Rankings: 0.748
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLam, KMen_HK
dc.contributor.authorLeung, MYHen_HK
dc.date.accessioned2010-12-23T08:32:56Z-
dc.date.available2010-12-23T08:32:56Z-
dc.date.issued2005en_HK
dc.identifier.citationEuropean Journal Of Mechanics, B/Fluids, 2005, v. 24 n. 1, p. 33-48en_HK
dc.identifier.issn0997-7546en_HK
dc.identifier.urihttp://hdl.handle.net/10722/129144-
dc.description.abstractThis paper reports an experimental investigation of the vortex shedding wake behind a long flat plate inclined at a small angle of attack to a main flow stream. Detailed velocity fields are obtained with particle-image velocimetry (PIV) at successive phases in a vortex shedding cycle at three angles of attack, α=20°, 25° and 30°, at a Reynolds number Re≈5,300. Coherent patterns and dynamics of the vortices in the wake are revealed by the phase-averaged PIV vectors and derived turbulent properties. A vortex street pattern comprising a train of leading edge vortices alternating with a train of trailing edge vortices is found in the wake. The trailing edge vortex is shed directly from the sharp trailing edge while there are evidences that the formation and shedding of the leading edge vortex involve a more complicated mechanism. The leading edge vortex seems to be shed into the wake from an axial location near the trailing edge. After shedding, the vortices are convected downstream in the wake with a convection speed roughly equal to 0.8 the free-stream velocity. On reaching the same axial location, the trailing edge vortex, as compared to the leading edge vortex, is found to possess a higher peak vorticity level at its centre and induce more intense fluid circulation and Reynolds stresses production around it. It is found that the results at the three angles of attack can be collapsed into similar trends by using the projected plate width as the characteristic length of the flow. © 2004 Elsevier SAS. All rights reserved.en_HK
dc.languageengen_US
dc.publisherElsevier France, Editions Scientifiques et Medicales. The Journal's web site is located at http://www.elsevier.com/locate/ejmfluen_HK
dc.relation.ispartofEuropean Journal of Mechanics, B/Fluidsen_HK
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in European Journal of Mechanics B - Fluids. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in European Journal of Mechanics B - Fluids, 2005, v. 24 n. 1, p. 33-48. DOI: 10.1016/j.euromechflu.2004.05.004-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectInclined flat plateen_HK
dc.subjectPIVen_HK
dc.subjectVorticesen_HK
dc.titleAsymmetric vortex shedding flow past an inclined flat plate at high incidenceen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0997-7546&volume=24&issue=1&spage=33&epage=48&date=2005&atitle=Asymmetric+vortex+shedding+flow+past+an+inclined+flat+plate+at+high+incidence-
dc.identifier.emailLam, KM:kmlam@hku.hken_HK
dc.identifier.authorityLam, KM=rp00134en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.euromechflu.2004.05.004en_HK
dc.identifier.scopuseid_2-s2.0-7044249869en_HK
dc.identifier.hkuros177001en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-7044249869&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume24en_HK
dc.identifier.issue1en_HK
dc.identifier.spage33en_HK
dc.identifier.epage48en_HK
dc.identifier.isiWOS:000225535600003-
dc.publisher.placeFranceen_HK
dc.identifier.scopusauthoridLam, KM=7403656958en_HK
dc.identifier.scopusauthoridLeung, MYH=8766283100en_HK

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