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Laser-Doppler Analysis of the Separation Zone of the Ground Vortex Flow

2009-06Journal article Embargoed access
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dc.contributor.authorSilva, André
dc.contributor.authorDurão, Diamantino
dc.contributor.authorBarata, Jorge M M
dc.contributor.authorSantos, Pedro José da Costa Teixeira
dc.contributor.authorRibeiro, Samuel
dc.date.accessioned2022-01-04T10:02:12Z
dc.date.embargo2060
dc.date.issued2009-06
dc.description.abstractLaser Doppler measurements are presented for a highly curved flow generated by the collision of plane wall turbulent jet with a low-velocity boundary layer. The experiments were performed for a wall jet-to-boundary layer velocity ratio of 2, and include mean and turbulent velocity characteristics along the two normal directions contained in planes parallel to the nozzle axis. The results, which have relevance to flows encountered by powered-lift aircraft operating in ground effect, quantify the structure of the complex ground vortex flow resulting from the collision of a wall jet with a boundary layer. The results revealed the existence of a very low-frequency instability. The source of this low frequency unsteadiness is probably associated with a small vortex located near the separation point. In the central zone of the upwash flow where the maximum values of the vertical velocity component occurs, additional distinct high frequency peaks were also identified.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologiapt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.issn1973-7459
dc.identifier.urihttp://hdl.handle.net/10400.6/11544
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherPraise Worthy Prizept_PT
dc.relationTurbulent Structure of the Impact Zone of Two Opposed Wall Flows
dc.relation.publisherversionhttps://www.praiseworthyprize.org/latest_issues/IREASE-latest/IREASE_vol_2_n_3.html#Laser-Doppler_Analysis_of_the_Separation_Zone_of_a_Ground_Vortex_Flowpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectVSTOLpt_PT
dc.subjectGround effectpt_PT
dc.subjectHighly curved flowpt_PT
dc.titleLaser-Doppler Analysis of the Separation Zone of the Ground Vortex Flowpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleTurbulent Structure of the Impact Zone of Two Opposed Wall Flows
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876-PPCDTI/PTDC%2FEME-MFE%2F64493%2F2006/PT
oaire.citation.endPage174pt_PT
oaire.citation.issue3pt_PT
oaire.citation.startPage167pt_PT
oaire.citation.titleInternational Review of Aerospace Engineering (IREASE)pt_PT
oaire.citation.volume2pt_PT
oaire.fundingStream5876-PPCDTI
person.familyNameResende Rodrigues da Silva
person.familyNameDurão
person.familyNameMartins Barata
person.givenNameAndré
person.givenNameDiamantino
person.givenNameJorge Manuel
person.identifierJ-4185-2012
person.identifierhFY_5JYAAAAJ&hl
person.identifier.ciencia-id8219-4B2B-E1C7
person.identifier.ciencia-idF611-BBCC-DAA8
person.identifier.orcid0000-0002-4901-7140
person.identifier.orcid0000-0001-5443-5382
person.identifier.orcid0000-0001-9014-5008
person.identifier.scopus-author-id11440407500
person.identifier.scopus-author-id7005535590
person.identifier.scopus-author-id11439470600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.embargofctCopyright © 2009 Praise Worthy Prize S.r.l. - All rights reservedpt_PT
rcaap.rightsembargoedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication908e150d-3890-457c-b5da-09c84671cb93
relation.isAuthorOfPublication4d63502d-bf44-4c22-92c8-5e1034f36564
relation.isAuthorOfPublicationc4346556-933d-4f70-9b6d-8e1670d57be6
relation.isAuthorOfPublication.latestForDiscoveryc4346556-933d-4f70-9b6d-8e1670d57be6
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