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Insights into Single Droplet Impact Models upon Liquid Films Using Alternative Fuels for Aero-Engines

dc.contributor.authorRibeiro, Daniela
dc.contributor.authorSilva, André
dc.contributor.authorPanão, Miguel
dc.date.accessioned2022-01-03T09:58:28Z
dc.date.available2022-01-03T09:58:28Z
dc.date.issued2020-09-25
dc.description.abstractIn aero-engines, the introduction of biofuels is among the best alternatives to fossil fuels, and this change is likely to affect the impact of droplets on interposed surfaces. Under this framework, this work reviews the main morphological hydrodynamic structures occurring upon the impact of a liquid droplet on a wetted surface, using jet fuel and biofuel mixtures as alternative fuels. The experiments performed allow investigating the effect of the liquid film thickness on the dynamic behavior of single drop impact, considering the relevancy of these phenomena to the optimization of engine operating parameters. Particular emphasis is given to the occurrence of crown splash, and the morphological differences in the outcomes of drop impact depending on the impact conditions and fluid properties. The four fluids tested included pure water (as reference), 100% Jet A-1, 75%/25%, and 50%/50% mixtures of Jet A-1 and NExBTL (Neste Renewable Diesel)—with the Weber impact number between 103 and 1625; Reynolds values 1411–16,889; and dimensionless film thicknesses of δ = 0.1, 0.5, and 1. The analysis on the secondary atomization for the different fluids evidences the predominance of prompt and crown splash, and jetting for alternative fuels. Finally, besides a systematic review of empirical correlations for the transition to splash, we investigate their universality by extrapolating the validation range to evaluate their ability to predict the outcome of impact accurately. One of the correlations studied show the highest degree of universality for the current experimental conditions, despite its limitation to thin liquid films (δ=0.1).pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologiapt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationRibeiro, D.F.S.; Silva, A.R.R.; Panão, M.R.O. Insights into Single Droplet Impact Models upon Liquid Films Using Alternative Fuels for Aero-Engines. Appl. Sci. 2020, 10, 6698. https://doi.org/10.3390/app10196698pt_PT
dc.identifier.doi10.3390/app10196698pt_PT
dc.identifier.issn20763417
dc.identifier.urihttp://hdl.handle.net/10400.6/11535
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPI AGpt_PT
dc.relationAssociate Laboratory of Energy, Transports and Aeronautics
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.mdpi.com/2076-3417/10/19/6698pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectDroplet impactpt_PT
dc.subjectExperimentalpt_PT
dc.subjectFuel mixturespt_PT
dc.subjectDrop impact modelspt_PT
dc.subjectLiquid filmpt_PT
dc.subjectSplashing transitionpt_PT
dc.titleInsights into Single Droplet Impact Models upon Liquid Films Using Alternative Fuels for Aero-Enginespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAssociate Laboratory of Energy, Transports and Aeronautics
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/UID%2FEMS%2F50022%2F2019/PT
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.issue19pt_PT
oaire.citation.startPage6698pt_PT
oaire.citation.titleApplied Sciencespt_PT
oaire.citation.volume10pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_CENTRO
person.familyNameRibeiro
person.familyNameResende Rodrigues da Silva
person.familyNamePanão
person.givenNameDaniela
person.givenNameAndré
person.givenNameMiguel Rosa Oliveira
person.identifierJ-4185-2012
person.identifiertnDRoxYAAAAJ
person.identifier.ciencia-id8219-4B2B-E1C7
person.identifier.ciencia-id181F-16AE-4536
person.identifier.orcid0000-0001-5059-5303
person.identifier.orcid0000-0002-4901-7140
person.identifier.orcid0000-0001-9561-9268
person.identifier.scopus-author-id11440407500
person.identifier.scopus-author-id8900941900
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.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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