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3D Simulations of Droplets Impacting Liquid Films: Crown Parameters Measurements

2020-01-05Conference object Restricted access
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dc.contributor.authorVasconcelos, Daniel
dc.contributor.authorRibeiro, Daniela
dc.contributor.authorSilva, R. D.
dc.contributor.authorBarata, Jorge M M
dc.date.accessioned2020-08-31T10:20:55Z
dc.date.available2020-08-31T10:20:55Z
dc.date.issued2020-01-05
dc.description.abstractThe 3D incompressible Navier-Stokes equations are coupled with the CLSVOF method and employed to numerically simulate the phenomena of single droplet impact onto liquid films. A solution-adaptive mesh refinement tool, based on the gradient of the volume fraction scalar, is adopted in order to reduce computational cost. Three different fluids are taken into account: 100% jet fuel and 75%/25% and 50%/50% of jet fuel and biofuel, respectively. Quantitative analysis of the crown height and outer diameter is performed for different impact conditions, such as the influence of the impact velocity and dimensionless thickness, between experimental and numerical results, and the qualitative analysis includes the occurrence of splashing and overall crown evolution. Numerical results show that the crown outer diameter measurements are in good agreement with the experimental cases, presenting a slight discrepancy for the lower liquid film thickness of h*= 0.2. The crown height measurements are under-predicted for the current model, maintaining a similar trend for dimensionless thicknesses of h*= 0.5 and h*= 1 while, for the lower thickness, the crown disintegrates at earlier stages. The crown curvature and rim instabilities exhibit significant differences, and the splashing phenomenon occurs for both the experimental and numerical outcomes.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologiapt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.2514/6.2020-1578pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/10401
dc.language.isoengpt_PT
dc.peerreviewednopt_PT
dc.publisherAmerican Institute of Aeronautics and Astronautics Inc, AIAApt_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.relationDroplet Impact onto Heated Wetted Surfaces: A Fundamental Study
dc.relation.publisherversionhttps://arc.aiaa.org/doi/pdf/10.2514/6.2020-1578pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectDroplet impactpt_PT
dc.subjectThin Liquid Layerspt_PT
dc.subjectCLSVOF methodpt_PT
dc.subjectNumericalpt_PT
dc.subjectSecondary atomisationpt_PT
dc.subjectBiofuelspt_PT
dc.subjectCrown evolutionpt_PT
dc.title3D Simulations of Droplets Impacting Liquid Films: Crown Parameters Measurementspt_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.awardTitleDroplet Impact onto Heated Wetted Surfaces: A Fundamental Study
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FEMS%2F50022%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/POR_CENTRO/SFRH%2FBD%2F140009%2F2018/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F143307%2F2019/PT
oaire.citation.conferencePlaceOrlando, Flórida, Estados Unidos da Américapt_PT
oaire.citation.endPage13pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleAIAA Scitech 2020 Forumpt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_CENTRO
person.familyNameRodrigues
person.familyNameRibeiro
person.familyNameSilva
person.familyNameMartins Barata
person.givenNameDaniel de Almeida Vasconcelos
person.givenNameDaniela
person.givenNameRicardo Dias
person.givenNameJorge Manuel
person.identifierhFY_5JYAAAAJ&hl
person.identifier.ciencia-id2A1A-1CBC-9E37
person.identifier.ciencia-idF611-BBCC-DAA8
person.identifier.orcid0000-0003-0918-6879
person.identifier.orcid0000-0001-5059-5303
person.identifier.orcid0000-0002-4756-7608
person.identifier.orcid0000-0001-9014-5008
person.identifier.ridD-7424-2014
person.identifier.scopus-author-id56146892700
person.identifier.scopus-author-id11439470600
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
rcaap.embargofctPara ter acesso ao artigo é necessário pagar à American Institute of Aeronautics and Astronautics Inc, AIAApt_PT
rcaap.rightsclosedAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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