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Dynamic behaviour of single droplets impinging upon liquid films with variable thickness: Jet a-1 and hvo mixtures

2018-07-22Journal article Open access
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dc.contributor.authorRibeiro, Daniela
dc.contributor.authorCunha, Nuno
dc.contributor.authorBarata, Jorge M M
dc.contributor.authorSilva, André
dc.date.accessioned2022-04-04T11:01:04Z
dc.date.available2022-04-04T11:01:04Z
dc.date.issued2018-07-22
dc.description.abstractFortunately, the human being has already started to be environmentally concerned and the search for new alternatives to reduce pollution increased. Transports are responsible for a significant portion and it is extremely necessary to bet on alternatives to oil. The introduction of biofuels in aero-engines could be an example. In order to modify and optimize piston engines and gas turbines to operate efficiently with alternative fuels, this work used Jet Fuel and Biofuel mixtures. The focus of these studies was to visualize the dynamic behavior of single droplets impinging upon liquid films with variable thickness. The existence of splash as well as its characteristics were reported and the differences and similarities between the outcomes according to the impact conditions and the fluid properties were catalogued. To achieve that an experimental facility was designed and built. Four fluids were tested: water (as reference), 100% Jet A-1, 75%/25% and 50%/50% mixtures of Jet A-1 and HVO (Hydro-processed Vegetable Oil), respectively, since civil aviation only accept mixtures with at least 50% Jet Fuel in volume. The fluid properties were measured to ensure accuracy. The liquid film depths considered were 10%, 50% and 100% of the droplet diameter. A high-speed digital camera was used to image acquisition and the droplet was released by a syringe pump connected to the needle at a specific pumping rate. The impact surface was a perspex container filled with fluid. Five needles with different inner diameters and three impact heights were employed to provide a variety of Weber and Reynolds numbers.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologiapt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationDaniela Ribeiro, Nuno Cunha, Jorge Barata, André Silva Dynamic Behaviour of Single Droplets Impinging upon Liquid Films with Variable Thickness: Jet A-1 and HVO Mixtures ICLASS2018: 14th International Conference on Liquid Atomization & Spray Systems, Chicago, EUA, 22-26 julho, 2018pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/12167
dc.language.isoengpt_PT
dc.peerreviewednopt_PT
dc.publisherILASS - Europe, Institute for Liquid Atomization and Spray Systemspt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectDroplet Impactpt_PT
dc.subjectExperimentalpt_PT
dc.subjectJet Fuelpt_PT
dc.subjectBiofuelpt_PT
dc.subjectLiquid Filmpt_PT
dc.subjectSplashpt_PT
dc.titleDynamic behaviour of single droplets impinging upon liquid films with variable thickness: Jet a-1 and hvo mixturespt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEMS%2F50022%2F2013/PT
oaire.citation.conferencePlaceChicagopt_PT
oaire.citation.titleICLASS 2018 - 14th International Conference on Liquid Atomization and Spray Systems 2020pt_PT
oaire.fundingStream5876
person.familyNameRibeiro
person.familyNameCunha
person.familyNameBarata
person.familyNameSilva
person.givenNameDaniela
person.givenNameNuno
person.givenNameJorge Manuel Martins
person.givenNameAndré Resende Rodrigues da
person.identifierhFY_5JYAAAAJ&hl
person.identifierJ-4185-2012
person.identifier.ciencia-idF611-BBCC-DAA8
person.identifier.ciencia-id8219-4B2B-E1C7
person.identifier.orcid0000-0001-5059-5303
person.identifier.orcid0000-0002-8494-6658
person.identifier.orcid0000-0001-9014-5008
person.identifier.orcid0000-0002-4901-7140
person.identifier.scopus-author-id11439470600
person.identifier.scopus-author-id11440407500
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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