Non-invasive detection of vortex street cavitation

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dc.citation.journalTitleIngenieria y Universidad
dc.contributor.authorCastro, A.
dc.contributor.authorBotero, F.
dc.contributor.researchgroupMecánica Aplicadaspa
dc.date.accessioned2021-04-16T20:10:40Z
dc.date.available2021-04-16T20:10:40Z
dc.date.issued2017-01-01
dc.description.abstractObjective: This paper introduces a methodology for the non-intrusive detection of von Kármán vortex street cavitation. It is based on the cyclostationary analysis of the airborne noise radiated by the collapsing bubbles. Materials and methods: A hydrodynamic profile is mounted in the test section of a high-speed cavitation tunnel, and the phenomenon is reproduced under controlled conditions of flow and pressure. The angle of incidence is kept constant. Flow velocity is varied to regulate the vortex generation frequency, and the pressure is adjusted to control the cavitation onset. Highspeed photography is used to confirm the occurrence of cavitation in the core of the vortices. A laser vibrometer pointing to the upper surface of the profile validates the fluid-structure interaction due to the vortex shedding. A microphone is used to sense the sound produced by the phenomenon and transmitted to the environment. Results and discussion: The cyclic coherence showed uncoupled evidence of the periodic detachment of vortices and the presence or absence of cavitation in their cores, reaching values close to 0.7 for specific frequencies. Conclusion: A non-intrusive monitoring approach and a statistical indicator were implemented to allow the diagnosis of such phenomena. © 2017, Pontificia Universidad Javeriana. All rights reserved.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=6735
dc.identifier.doi10.11144/javeriana.iyu21-2.ndvs.
dc.identifier.issn20112769
dc.identifier.issn87552930spa
dc.identifier.otherSCOPUS;2-s2.0-85021316434
dc.identifier.urihttp://hdl.handle.net/10784/29197
dc.language.isospaeng
dc.publisherPontificia Universidad Javeriana
dc.publisher.departmentUniversidad EAFIT. Departamento de Ingeniería Mecánicaspa
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85021316434&partnerID=40&md5=4ea356aa8e6e87a733bcd1064c353dfd
dc.rightsPontificia Universidad Javeriana
dc.sourceIngenieria y Universidad
dc.subject.keywordCavitationeng
dc.subject.keywordFluid structure interactioneng
dc.subject.keywordTiming jittereng
dc.subject.keywordVortex sheddingeng
dc.subject.keywordWakeseng
dc.subject.keywordAngle of Incidenceeng
dc.subject.keywordControlled conditionseng
dc.subject.keywordCyclostationary analysiseng
dc.subject.keywordNon-intrusive monitoringeng
dc.subject.keywordNon-invasive detectioneng
dc.subject.keywordSpecific frequencieseng
dc.subject.keywordStatistical indicatorseng
dc.subject.keywordVortex streeteng
dc.subject.keywordVortex floweng
dc.titleNon-invasive detection of vortex street cavitationeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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