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A study of droplet deformation: The effect of crossflow velocity on jet fuel and biofuel droplets impinging onto a dry smooth surface

2020-06-29Journal article Open access
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dc.contributor.authorFerrão, Inês
dc.contributor.authorVasconcelos, Daniel
dc.contributor.authorRibeiro, Daniela
dc.contributor.authorSilva, A. R. R.
dc.contributor.authorBarata, Jorge M M
dc.date.accessioned2020-08-31T10:38:38Z
dc.date.available2022-06-29T00:30:18Z
dc.date.issued2020-06-29
dc.description.abstractThe aeronautical sector has been, in the last decade, one of those that most invested in more efficient and ecological solutions in order to reduce significantly greenhouse gas and pollutant emissions. The introduction of biofuels in fuel mixtures for aircraft engines is a promising alternative in this sector. The main objective of this experimental study is understanding the influence of crossflow variation on droplet deformation and consequent impact outcomes. An experimental facility was developed and validated to study the impact of single droplets onto a dry, smooth aluminium impact surface under the influence of several crossflow velocities. Different crossflow velocities of 4,5,6,7 and 8m/s were tested. A combination of conventional jet fuel and a biofuel was considered to understand the behavior of jet fuel and biofuel mixtures, and three fluids were used: 100% jet fuel, 75% jet fuel/25% biofuel and 50% jet fuel/50% biofuel. Several parameters, including velocity components, impact angle and eccentricity, were analysed for the different crossflow velocities, and the spread and splash regimes were also defined for the different fluids. The results display that, for each crossflow velocity, an increase in the droplet impact velocity causes a shift from the spread to the splash regime. The presence of a crossflow induces deformation on the droplet, altering its outcome. Ellipsoidal droplets promote the occurrence of spreading, whereas splashing tends to occur for spherical forms, corresponding to higher and lower eccentricity values, respectively. A substantial increase in the crossflow velocity leads to aerodynamic breakup of the droplet.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologiapt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.fuel.2020.118321pt_PT
dc.identifier.issn00162361
dc.identifier.urihttp://hdl.handle.net/10400.6/10404
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_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.relationDroplet Impact onto Heated Wetted Surfaces: A Fundamental Study
dc.relationNovo: Alternative Liquid Fuels for Aviation Gas Turbines: Experiments and Modelling. Inicial: High Energy Density Fuels in Aviation Gas Turbines: Experiments and Modelling
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S001623612031317X?via%3Dihubpt_PT
dc.subjectDroplet impactpt_PT
dc.subjectDry surfacept_PT
dc.subjectCrossflowpt_PT
dc.subjectDroplet deformationpt_PT
dc.subjectSecondary atomisationpt_PT
dc.subjectBiofuelspt_PT
dc.subjectAircraft enginespt_PT
dc.subjectPollutant emissionpt_PT
dc.subjectGas emissionspt_PT
dc.subjectGreenhouse gasespt_PT
dc.subjectDrop breakuppt_PT
dc.subjectExperimental facilitiespt_PT
dc.titleA study of droplet deformation: The effect of crossflow velocity on jet fuel and biofuel droplets impinging onto a dry smooth surfacept_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.awardTitleDroplet Impact onto Heated Wetted Surfaces: A Fundamental Study
oaire.awardTitleNovo: Alternative Liquid Fuels for Aviation Gas Turbines: Experiments and Modelling. Inicial: High Energy Density Fuels in Aviation Gas Turbines: Experiments and Modelling
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.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F143307%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F144688%2F2019/PT
oaire.citation.startPage118321pt_PT
oaire.citation.titleFuelpt_PT
oaire.citation.volume279pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_CENTRO
oaire.fundingStreamOE
person.familyNameFerrão
person.familyNameRodrigues
person.familyNameRibeiro
person.familyNameSilva
person.familyNameBarata
person.givenNameInês Alexandra dos Santos
person.givenNameDaniel de Almeida Vasconcelos
person.givenNameDaniela
person.givenNameAndré Resende Rodrigues da
person.givenNameJorge Manuel Martins
person.identifierJ-4185-2012
person.identifierhFY_5JYAAAAJ&hl
person.identifier.ciencia-idBE10-CCE6-C327
person.identifier.ciencia-id2A1A-1CBC-9E37
person.identifier.ciencia-id8219-4B2B-E1C7
person.identifier.ciencia-idF611-BBCC-DAA8
person.identifier.orcid0000-0003-4391-8930
person.identifier.orcid0000-0003-0918-6879
person.identifier.orcid0000-0001-5059-5303
person.identifier.orcid0000-0002-4901-7140
person.identifier.orcid0000-0001-9014-5008
person.identifier.scopus-author-id11440407500
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.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
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.embargofctCopyright cedido à editora até terminar embargo.pt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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