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Effect of Reynolds Number on a Plunging Airfoil

2020-06-02Journal article Open access
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dc.contributor.authorRodrigues, Diana Carvalho
dc.contributor.authorCamacho, E. A. R.
dc.contributor.authorNeves, Fernando M. S. P.
dc.contributor.authorSilva, André
dc.contributor.authorBarata, Jorge M M
dc.date.accessioned2022-04-12T14:20:27Z
dc.date.available2022-04-12T14:20:27Z
dc.date.issued2020-06-02
dc.description.abstractBiomimetics is an area of science that studies the development of new technologies, whose source of inspiration is Nature. Unlike traditional aircraft, animals only have one structure to create both lift and thrust, and for Humans, although in the recent years the studies in this area increased, a long way must be made to achieve their capability. The present paper focuses on the effect of the Reynolds number on the wake configuration produced by a plunging airfoil. The experimental work was performed using an airstream, that was marked with smoke, with an oscillating airfoil NACA0012, whose dimensions are 44cm and 10cm of span and aerodynamic chord, respectively. The motion prescribed for the wing is harmonic, since it very well represents the type of motion seen in Nature. Frequency and amplitude were maintained, respectively, at 1.2Hz and 2.8cm, and the wind speed range from 0.25m/s to 1.00m/s, which represents a nondimensional amplitude of 0.28, a reduced frequencies of 3.02, 1.51 and 0.75, and a Strouhal number and a Reynolds number range of, 0.07 – 0.27 and 1,500 – 6,300, respectively. Results indicate that, with the increase of the Reynolds number, the convection effects become more predominant than diffusion effects, the curvature of the wakes and the maximum effective angle of attack decrease, and time and configuration of vortex shedding change. For Re = 1,500, St = 0.27, another relevant conclusion appears; the interaction of the leading-edge vortex with the trailing-edge vortex indicates an improvement of the aerodynamic performance of this system.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologiapt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDiana Rodrigues, Emanuel Camacho, Fernando Neves, André Silva, Jorge Barata Effect of Reynolds Number on a Plunging Airfoil ICEUBI2019 – International Congress on Engineering – “Engineering for Evolution”, Covilhã, Portugal, 27-29 novembro, 2019 DOI: 10.18502/keg.v5i6.7090pt_PT
dc.identifier.doi10.18502/keg.v5i6.7090pt_PT
dc.identifier.issn2518-6841
dc.identifier.urihttp://hdl.handle.net/10400.6/12210
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherKnowledge Ept_PT
dc.relationAssociate Laboratory of Energy, Transports and Aeronautics
dc.relation.publisherversionhttps://knepublishing.com/index.php/KnE-Engineering/article/view/7090pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBiomimeticspt_PT
dc.subjectWakespt_PT
dc.subjectAirfoilpt_PT
dc.subjectVorticespt_PT
dc.subjectPlungingpt_PT
dc.titleEffect of Reynolds Number on a Plunging Airfoilpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aeronautics
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FEMS%2F50022%2F2019/PT
oaire.citation.conferencePlaceCovilhã, Portugalpt_PT
oaire.citation.endPage703pt_PT
oaire.citation.startPage692pt_PT
oaire.citation.titleKnE Engineering / International Congress on Engineering — Engineering for Evolutionpt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameRodrigues Camacho
person.familyNameSilva Pereira das Neves
person.familyNameResende Rodrigues da Silva
person.familyNameMartins Barata
person.givenNameEmanuel António
person.givenNameFernando Manuel da
person.givenNameAndré
person.givenNameJorge Manuel
person.identifierJ-4185-2012
person.identifierhFY_5JYAAAAJ&hl
person.identifier.ciencia-id4416-08D8-F83D
person.identifier.ciencia-idBC15-D534-3DCC
person.identifier.ciencia-id8219-4B2B-E1C7
person.identifier.ciencia-idF611-BBCC-DAA8
person.identifier.orcid0000-0002-1648-8368
person.identifier.orcid0000-0002-5826-7459
person.identifier.orcid0000-0002-4901-7140
person.identifier.orcid0000-0001-9014-5008
person.identifier.scopus-author-id11440407500
person.identifier.scopus-author-id11439470600
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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