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Authordc.contributor.authorHernández Pellicer, Rodrigo 
Authordc.contributor.authorTapia, L. 
Admission datedc.date.accessioned2020-05-18T15:31:47Z
Available datedc.date.available2020-05-18T15:31:47Z
Publication datedc.date.issued2020
Cita de ítemdc.identifier.citationInternational Journal of Heat and Fluid Flow 81 (2020) 108526es_ES
Identifierdc.identifier.other10.1016/j.ijheatfluidflow.2019.108526
Identifierdc.identifier.urihttps://repositorio.uchile.cl/handle/2250/174783
Abstractdc.description.abstractWe investigate the onset and development of vortical flow disturbances introduced into the wake of a horizontally fixed flat-plate by means of the controlled motion of a trailing edge flap. The vibrating mechanics of the flap allows for the introduction of both impulsive and harmonic weak amplitude velocity disturbances which are propagated downstream into the wake flow of the flat-plate. Quantitative experimental and numerical predictions of both steady and unsteady wake flow velocity resulting from different flapping frequencies are made at low Reynolds numbers (Re < 10(4)). Frequency response tests of the wake confirmed the existence of two dominant frequencies where the wake flow organises with a particular arrangement of downstream moving vortex structures. Numerical predictions of steady (unforced) and forced wake velocity profiles and kinetic energy profiles are in good agreement with the experimental results. In order to understand practical implications of the dominant vortex structures in scalar transport, we have extended the numerical part of the study solving for the concentration equation of a passive scalar being injected in particular regions of the physical domain. A spatial correlation between the trajectory of vortex structures and the scalar concentration downstream the wake is observed. Moreover, the onset of tip vortex structures produced during the forcing cycle seems to be responsible of a local increase of scalar concentration near the span wise flap ends.es_ES
Lenguagedc.language.isoenes_ES
Publisherdc.publisherElsevieres_ES
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/*
Sourcedc.sourceInternational Journal of Heat and Fluid Flowes_ES
Keywordsdc.subjectTip vortexes_ES
Keywordsdc.subjectHeates_ES
Keywordsdc.subjectGeneratorses_ES
Keywordsdc.subjectVorticeses_ES
Títulodc.titleVortex dynamics and scalar transport in the wake of a flat-plate controlled by a vibrating trailing-edge flapes_ES
Document typedc.typeArtículo de revistaes_ES
dcterms.accessRightsdcterms.accessRightsAcceso Abierto
Catalogueruchile.catalogadorctces_ES
Indexationuchile.indexArtículo de publicación ISI
Indexationuchile.indexArtículo de publicación SCOPUS


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Attribution-NonCommercial-NoDerivs 3.0 Chile
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 3.0 Chile