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Comparison of DBD plasma actuators flow control authority in different modes of actuation

dc.contributor.authorAbdollahzadehsangroudi, M.
dc.contributor.authorPáscoa, J.C.
dc.contributor.authorOliveira, P.J.
dc.date.accessioned2021-01-19T15:12:01Z
dc.date.available2021-01-19T15:12:01Z
dc.date.issued2018
dc.description.abstractThe principal mechanisms by which DBD plasma actuators influence flow characteristics, and are thus able to control that flow, depend strongly on their modes of actuation. Here two different modes based on steady and unsteady actuation are compared and investigated. A simple sinusoidal voltage distribution and a duty cycled sinusoidal voltage were considered for these purposes. Leading edge separation around a stalled NACA 0012 airfoil at Re=3 ×10^16 is considered as test case. A simplified phenomenological model which uses the correct scale of the plasma body force is considered for the modeling of the plasma actuator effects. The steady actuation results show that flow control can be effectively achieved by this mode of operation with continuous injection of momentum in the boundary layer. Unsteady actuation with an imposed frequency equal to the calculated natural frequencies of the flow gives rise to a resonance actuation effect.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.ast.2018.04.013pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/11045
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectUnsteady actuationpt_PT
dc.subjectOptimum frequency Flow controlpt_PT
dc.subjectAnalytical modelpt_PT
dc.subjectResonance modept_PT
dc.titleComparison of DBD plasma actuators flow control authority in different modes of actuationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FEMS-ENE%2F5742%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEMS%2F00151%2F2013/PT
oaire.citation.endPage196pt_PT
oaire.citation.startPage183pt_PT
oaire.citation.titleAerospace Science and Technologypt_PT
oaire.citation.volume78pt_PT
oaire.fundingStream9471 - RIDTI
oaire.fundingStream5876
person.familyNameAbdollahzadehsangroudi
person.familyNamePascoa
person.familyNameOliveira
person.givenNameMohammadmahdi
person.givenNameJose
person.givenNamePaulo J.
person.identifier.ciencia-idFE15-2457-A47D
person.identifier.ciencia-id1710-5975-0E2E
person.identifier.ciencia-id7A15-7012-C5DF
person.identifier.orcid0000-0002-9396-3855
person.identifier.orcid0000-0001-7019-3766
person.identifier.orcid0000-0001-9843-7558
person.identifier.ridA-4638-2009
person.identifier.scopus-author-id24280605700
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
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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