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Analysis And Visualization Of The Perturbations Imposed On The Liquid Film By Crown Sheet Collapse Or Closure

2022-07-11Conference object Open access
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dc.contributor.authorRibeiro, Daniela
dc.contributor.authorPanão, Miguel
dc.contributor.authorBarata, Jorge M M
dc.contributor.authorSilva, A. R. R.
dc.date.accessioned2023-01-02T12:18:49Z
dc.date.available2023-01-02T12:18:49Z
dc.date.issued2022-07-11
dc.description.abstractBubble encapsulation is a phenomenon that results from droplet impact on a liquid film for very specific impact conditions. After splashing, the crown liquid sheet starts to bend inwards, and eventually, the jets at the top of the crown merge and form a perfect empty bubble. This bubble bursts due to the impingement of a secondary droplet that falls in the spherical dome or by reaching its critical thickness. However, bubble encapsulation is seldom reported in the literature. Due to that, this work focuses on understanding better its dynamics and formation mechanisms. By using a bottom perspective of the phenomenon, important information about its dynamics is disclosed. From the bottom shadowgraphs, the capillary waves and the perturbations imposed on the steady liquid film are clearly observed. From previous works, it was confirmed that its occurrence is systematic, so, one of the goals of this study is to realize how the impact conditions influence the phenomenon and if we can establish a criterion for its occurrence. Despite the scarce information about the phenomenon, there are some works about it that are focused on the cavity underneath the bubble. In this study, we observed the cavity and conclude that the cavity shape does not influence the bubble encapsulation phenomenon. Finally, the crown closure time was measured for a specific set of impact conditions and it was analyzed depending on the dimensionless thickness of the liquid film.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologiapt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDaniela Ribeiro, Miguel Panão, Jorge Barata, André Silva, "Analysis And Visualization Of The Perturbations Imposed On The Liquid Film By Crown Sheet Collapse Or Closure", 20th International Symposium on Applications of Laser and Imaging Techniques to Fluid Mechanics, Lisboa, 11 a 14 julho 2022pt_PT
dc.identifier.isbn978-989-53637-0-4
dc.identifier.urihttp://hdl.handle.net/10400.6/12558
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherCenter for Innovation, Technology and Policy Research IN+pt_PT
dc.relationAssociate Laboratory of Energy, Transports and Aeronautics
dc.relationNovo: nsights into Droplet-Surface Collisions for Aeronautical Applications. Inicial: Modelling of Droplets-Wall Impingement: Jet Fuel and Biofuel Mixtures
dc.relation.publisherversionhttps://www.dropbox.com/s/j5s4raezkk6wlx3/Proceedings_LxSymp2022.pdf?dl=0pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectDroplet impactpt_PT
dc.subjectLiquid film thicknesspt_PT
dc.subjectCrown sheetpt_PT
dc.titleAnalysis And Visualization Of The Perturbations Imposed On The Liquid Film By Crown Sheet Collapse Or Closurept_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aeronautics
oaire.awardTitleNovo: nsights into Droplet-Surface Collisions for Aeronautical Applications. Inicial: Modelling of Droplets-Wall Impingement: Jet Fuel and Biofuel Mixtures
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50022%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_CENTRO/SFRH%2FBD%2F140009%2F2018/PT
oaire.citation.conferencePlaceLisboa, Portugalpt_PT
oaire.citation.title20th International Symposium on Applications of Laser and Imaging Techniques to Fluid Mechanicspt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_CENTRO
person.familyNameRibeiro
person.familyNamePanão
person.familyNameMartins Barata
person.familyNameResende Rodrigues da Silva
person.givenNameDaniela
person.givenNameMiguel Rosa Oliveira
person.givenNameJorge Manuel
person.givenNameAndré
person.identifiertnDRoxYAAAAJ
person.identifierhFY_5JYAAAAJ&hl
person.identifierJ-4185-2012
person.identifier.ciencia-id181F-16AE-4536
person.identifier.ciencia-idF611-BBCC-DAA8
person.identifier.ciencia-id8219-4B2B-E1C7
person.identifier.orcid0000-0001-5059-5303
person.identifier.orcid0000-0001-9561-9268
person.identifier.orcid0000-0001-9014-5008
person.identifier.orcid0000-0002-4901-7140
person.identifier.scopus-author-id8900941900
person.identifier.scopus-author-id11439470600
person.identifier.scopus-author-id11440407500
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.typeconferenceObjectpt_PT
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