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The Turbulent Structure of a Ground Vortex

2012-06-25Journal article Embargoed access
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dc.contributor.authorBarata, Jorge M M
dc.contributor.authorSantos, Pedro
dc.contributor.authorSilva, André
dc.date.accessioned2022-04-11T09:20:18Z
dc.date.embargo2060-06-25
dc.date.issued2012-06-25
dc.description.abstractLaser-Doppler measurements of the velocity characteristics of a ground vortex flow resulting from the collision of a wall jet with a boundary layer are presented and discussed together with flow visualization. In the present study a velocity ratio between the boundary layer and the wall jet of 0.5 was used, and the results confirmed the existence of a very complex vortex flow region in the collision zone near the ground wall. Vorticity values were calculated from the experimental data and revealed negative (clockwise) vorticity near the stagnation point which is an indication of the presence of a small secondary vortex, also detected from the visualization studies but not sufficiently identified from the LDA measurements. The analysis of turbulent energy equation terms using the measured data revealed that production by normal and shear stresses are both very important to the turbulent structure of the impact zone of the ground vortex.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologiapt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBarata, J.M.M., Santos, P.J.C.T., Silva, A.R.R. The Turbulent Structure of a Ground Vortex 48th Aerospace Sciences Meeting, Orlando, Flórida, EUA, 4-7 janeiro, 2010 DOI: 10.2514/6.2010-1051pt_PT
dc.identifier.doi10.2514/6.2010-1051pt_PT
dc.identifier.isbn978-1-60086-959-4
dc.identifier.isbn978-160086739-2
dc.identifier.urihttp://hdl.handle.net/10400.6/12190
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Institute of Aeronautics and Astronautics Incpt_PT
dc.relationTurbulent Structure of the Impact Zone of Two Opposed Wall Flows
dc.relation.publisherversionhttps://arc.aiaa.org/doi/10.2514/6.2010-1051pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectHorseshoe Vortexpt_PT
dc.subjectBoundary Layer Thicknesspt_PT
dc.subjectCross Flow Velocitypt_PT
dc.subjectNormal Strainpt_PT
dc.subjectKinetic Energypt_PT
dc.subjectTurbulent Flowpt_PT
dc.subjectAerodynamic Instabilitypt_PT
dc.subjectHistogramspt_PT
dc.subjectLow Speed Wind Tunnelpt_PT
dc.subjectTurbulence Intensitypt_PT
dc.titleThe Turbulent Structure of a Ground Vortexpt_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.conferencePlaceOrlando, Floridapt_PT
oaire.citation.title48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Expositionpt_PT
oaire.fundingStream5876-PPCDTI
person.familyNameMartins Barata
person.familyNameResende Rodrigues da Silva
person.givenNameJorge Manuel
person.givenNameAndré
person.identifierhFY_5JYAAAAJ&hl
person.identifierJ-4185-2012
person.identifier.ciencia-idF611-BBCC-DAA8
person.identifier.ciencia-id8219-4B2B-E1C7
person.identifier.orcid0000-0001-9014-5008
person.identifier.orcid0000-0002-4901-7140
person.identifier.scopus-author-id11439470600
person.identifier.scopus-author-id11440407500
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.embargofctCopyright © 2010 by the American Institute of Aeronautics and Astronautics, Inc.pt_PT
rcaap.rightsembargoedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationc4346556-933d-4f70-9b6d-8e1670d57be6
relation.isAuthorOfPublication908e150d-3890-457c-b5da-09c84671cb93
relation.isAuthorOfPublication.latestForDiscovery908e150d-3890-457c-b5da-09c84671cb93
relation.isProjectOfPublicationb513d9cb-22d9-43e4-81e5-615801e0b268
relation.isProjectOfPublication.latestForDiscoveryb513d9cb-22d9-43e4-81e5-615801e0b268

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