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Article: Phase-locked eduction of vortex shedding in flow behind past and inclined flat plate

TitlePhase-locked eduction of vortex shedding in flow behind past and inclined flat plate
Authors
KeywordsPhysics
Issue Date1996
PublisherAmerican Institute of Physics. The Journal's web site is located at http://ojps.aip.org/phf
Citation
Physics of Fluids, 1996, v. 8 n. 5, p. 1159-1168 How to Cite?
AbstractFlow past an inclined flat plate at an angle of attack of 30° and a Reynolds number of 30 000 is investigated experimentally. The velocity field in the wake is measured with a laser doppler anemometer (LDA) in the region from one plate breadth downstream to three and a half-plate breadths downstream. Controlled forcing is applied to the wake by vibrating the plate in the across-wind direction at a frequency in the middle of the lock-in range. The forcing serves to enhance the regularity and two-dimensionality of vortex shedding from the plate. It also facilitates phase-locked averaging of the LDA data. The LDA bursts are sorted according to their arrival instants relative to a particular phase of the vortex shedding cycles. The phase-averaged velocity results reveal large-scale vortical structures in the wake. Dynamical properties of these structures such as coherent vorticity and Reynolds stress production are discussed. The wake is found to be strongly asymmetric. The flow dynamics in the wake are dominated by a train of counterclockwise vortices shed from the trailing edge of the plate. The development, shedding and subsequent convection of these vortices are studied by following the consecutive phases of the shedding cycle. ©1996 American Institute of Physics.
Persistent Identifierhttp://hdl.handle.net/10722/42643
ISSN
2015 Impact Factor: 2.017
2015 SCImago Journal Rankings: 1.036
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLam, KMen_HK
dc.date.accessioned2007-03-23T04:28:40Z-
dc.date.available2007-03-23T04:28:40Z-
dc.date.issued1996en_HK
dc.identifier.citationPhysics of Fluids, 1996, v. 8 n. 5, p. 1159-1168en_HK
dc.identifier.issn1070-6631en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42643-
dc.description.abstractFlow past an inclined flat plate at an angle of attack of 30° and a Reynolds number of 30 000 is investigated experimentally. The velocity field in the wake is measured with a laser doppler anemometer (LDA) in the region from one plate breadth downstream to three and a half-plate breadths downstream. Controlled forcing is applied to the wake by vibrating the plate in the across-wind direction at a frequency in the middle of the lock-in range. The forcing serves to enhance the regularity and two-dimensionality of vortex shedding from the plate. It also facilitates phase-locked averaging of the LDA data. The LDA bursts are sorted according to their arrival instants relative to a particular phase of the vortex shedding cycles. The phase-averaged velocity results reveal large-scale vortical structures in the wake. Dynamical properties of these structures such as coherent vorticity and Reynolds stress production are discussed. The wake is found to be strongly asymmetric. The flow dynamics in the wake are dominated by a train of counterclockwise vortices shed from the trailing edge of the plate. The development, shedding and subsequent convection of these vortices are studied by following the consecutive phases of the shedding cycle. ©1996 American Institute of Physics.en_HK
dc.format.extent353394 bytes-
dc.format.extent25600 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Institute of Physics. The Journal's web site is located at http://ojps.aip.org/phfen_HK
dc.relation.ispartofPhysics of Fluids-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectPhysicsen_HK
dc.titlePhase-locked eduction of vortex shedding in flow behind past and inclined flat plateen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1070-6631&volume=8&issue=5&spage=1159&epage=1168&date=1996&atitle=Phase-locked+eduction+of+vortex+shedding+in+flow+behind+past+and+inclined+flat+plateen_HK
dc.identifier.emailLam, KM: kmlam@hku.hk-
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1063/1.868907en_HK
dc.identifier.scopuseid_2-s2.0-0030131324-
dc.identifier.hkuros11666-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0030131324&selection=ref&src=s&origin=recordpage-
dc.identifier.volume8-
dc.identifier.issue5-
dc.identifier.spage1159-
dc.identifier.epage1168-
dc.identifier.isiWOS:A1996UH30500005-
dc.publisher.placeUnited States-
dc.identifier.scopusauthoridLam, KM=7403656958-

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