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Dynamic Stall Mitigation Using a Deflectable Leading Edge: The IK30 Mechanism

2024-12-24Journal article Embargoed access
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dc.contributor.authorCamacho, Emanuel A. R.
dc.contributor.authorSilva, A. R. R.
dc.contributor.authorMarques, Flávio D.
dc.date.accessioned2025-01-06T11:02:39Z
dc.date.embargo2026-12-24
dc.date.issued2024-12-24
dc.description.abstractOne major problem affecting rotor blade aerodynamics is dynamic stall, characterized by a series of events where transient vortex shedding negatively affects drag and lift, leading to abrupt changes in the wing’s pitching moment. The present work focuses on the mitigation of such effects by using a modified NACA0012 airfoil—the NACA0012-IK30 airfoil—previously used for thrust enhancement in flapping propulsion. An experimental rig is designed to study the advantages of a deflectable leading edge on a plunging and pitching wing, more specifically its influence on the aerodynamic coefficients over time. In the first stage, results indicate that the proposed IK30 mechanism does mitigate the stall effects under static conditions, with stall visualization data corroborating it. Regarding time-varying conditions, the data presents the adequacy of the proposed geometry under different plunging and pitching conditions, which, when correctly used, can mitigate or even eradicate the adverse effects of dynamic stall experienced, leading to significant drag reductions and modest lift enhancements. In the absence of a dynamic stall, the movable leading edge can also provide operational advantages, where it does not negatively affect drag or lift but can reduce the pitching moment intensity by indirectly shifting the pressure center. This study contributes to the long-standing discussion on how to mitigate the adverse effects of dynamic stall by providing an innovative yet simple solution.pt_PT
dc.description.sponsorshipFundação para a Ciência e Tecnologia (FCT) e Brazilian National Council for Scientific and Technological Development (CNPq grants #306824/2019-1).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1061/JAEEEZ.ASENG-6040pt_PT
dc.identifier.issn08931321
dc.identifier.urihttp://hdl.handle.net/10400.6/14963
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Society of Civil Engineers (ASCE)pt_PT
dc.relationAssociate Laboratory of Energy, Transports and Aeronautics
dc.relationAssociate Laboratory of Energy, Transports and Aeronautics
dc.relationAssociate Laboratory of Energy, Transports and Aerospace.
dc.relationBoundary Layer Control in Plunging and Pitching Airfoils
dc.relation.publisherversionhttps://ascelibrary.org/doi/10.1061/JAEEEZ.ASENG-6040pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectAerodynamic dragpt_PT
dc.subjectAerodynamic stallingpt_PT
dc.subjectDrag reductionpt_PT
dc.subjectVortex flowpt_PT
dc.subjectAdverse effectpt_PT
dc.subjectAerodynamic coefficientspt_PT
dc.subjectBlade aerodynamicpt_PT
dc.subjectDynamic stallspt_PT
dc.subjectExperimental rigspt_PT
dc.subjectFlapping propulsionpt_PT
dc.subjectPitching momentspt_PT
dc.subjectRotor bladespt_PT
dc.subjectStall effectspt_PT
dc.subjectVortex-sheddingpt_PT
dc.titleDynamic Stall Mitigation Using a Deflectable Leading Edge: The IK30 Mechanismpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aeronautics
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aeronautics
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aerospace.
oaire.awardTitleBoundary Layer Control in Plunging and Pitching Airfoils
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50022%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50022%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0079%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_CENTRO/2020.04648.BD/PT
oaire.citation.issue2pt_PT
oaire.citation.titleJournal of Aerospace Engineeringpt_PT
oaire.citation.volume38pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_CENTRO
person.familyNameRodrigues Camacho
person.familyNameResende Rodrigues da Silva
person.familyNameMarques
person.givenNameEmanuel António
person.givenNameAndré
person.givenNameFlávio D.
person.identifierJ-4185-2012
person.identifier1584962
person.identifier.ciencia-id4416-08D8-F83D
person.identifier.ciencia-id8219-4B2B-E1C7
person.identifier.ciencia-id8316-99B9-CBB4
person.identifier.orcid0000-0002-1648-8368
person.identifier.orcid0000-0002-4901-7140
person.identifier.orcid0000-0003-1451-3424
person.identifier.ridF-4698-2012
person.identifier.scopus-author-id11440407500
person.identifier.scopus-author-id7102759984
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.embargofctForam cedidos os direitos à American Society of Civil Engineers (ASCE)pt_PT
rcaap.rightsembargoedAccesspt_PT
rcaap.typearticlept_PT
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