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Effect of Surface Wettability on the Droplet Impact Morphologies on Dry Smooth Polycarbonate Surfaces

2021-08-30Journal article Open access
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dc.contributor.authorFoltyn, Patrick
dc.contributor.authorRibeiro, Daniela
dc.contributor.authorSilva, André
dc.contributor.authorLamanna, Grazia
dc.contributor.authorWeigand, Bernhard
dc.date.accessioned2022-04-04T10:52:34Z
dc.date.available2022-04-04T10:52:34Z
dc.date.issued2021-08-30
dc.description.abstractThe surface wettability has a significant influence on the morphology and spreading behaviorduring droplet impacts on dry smooth walls. On the way for predicting spreading diameters independency of the wetting behavior, the experimental database was extended by an experi-mental study in which distilled water and isopropanol droplets have impacted onto dry smoothLexan®(Polycarbonate) surfaces at four different impact velocities. The range of Reynoldsnumbers was set between1,135and12,240and for the Weber number between80and1,165.The surface material, and thus also the characteristic surface roughness, were kept constant,while the wetting behavior was modified using plasma activation and plasma polymerizationprocesses. Different contact angles have been investigated in a range from full wetting to non-wetting for water and from full wetting to partial wetting for isopropanol. The experiments havebeen conducted on a newly designed test rig. High-speed diffuse backlight images at20 kHzfrom the top and the lateral perspective are acquired on a shared CMOS-sensor simultane-ously. A bottom perspective in a total internal reflection configuration is acquiring the footprintof the droplet impact. This enables to better define the maximum spreading diameter and todistinguish between wetted and non-wetted areas.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologia (FCT), Deutsche Forschungs-gemeinschaft (DFG)pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPatrick Foltyn, Daniela Ribeiro, André Silva, Grazia Lamanna, Bernhard Weigand Effect of Surface Wettability on the Droplet Impact Morphologies on Dry Smooth Polycarbonate Surfaces ICLASS 2021 - 15th Triennial International Conference on Liquid Atomization and Spray Systems, Edimburgo, Reino Unido, 29 Agosto - 2 Setembro, 2021pt_PT
dc.identifier.doi10.2218/iclass.2021.5907pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.6/12163
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherUniversity of Edinburgh Journal Hosting Servicept_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.publisherversionhttp://journals.ed.ac.uk/ICLASS_Edinburgh/article/view/5907pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectWetting behaviorpt_PT
dc.subjectApparent contact anglept_PT
dc.subjectDroplet spreadingpt_PT
dc.subjectHigh-speed imagingpt_PT
dc.subjectPlasma processespt_PT
dc.titleEffect of Surface Wettability on the Droplet Impact Morphologies on Dry Smooth Polycarbonate Surfacespt_PT
dc.typejournal article
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.conferencePlaceUniversity of Edinburgh & Virtual Eventpt_PT
oaire.citation.issue1pt_PT
oaire.citation.titleInternational Conference on Liquid Atomization and Spray Systems (ICLASS)pt_PT
oaire.citation.volume1pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamPOR_CENTRO
person.familyNameFoltyn
person.familyNameRibeiro
person.familyNameResende Rodrigues da Silva
person.familyNameLamanna
person.familyNameWeigand
person.givenNamePatrick
person.givenNameDaniela
person.givenNameAndré
person.givenNameGrazia
person.givenNameBernhard
person.identifierJ-4185-2012
person.identifier.ciencia-id8219-4B2B-E1C7
person.identifier.orcid0000-0002-6921-5216
person.identifier.orcid0000-0001-5059-5303
person.identifier.orcid0000-0002-4901-7140
person.identifier.orcid0000-0002-1725-9663
person.identifier.orcid0000-0002-1469-079X
person.identifier.ridB-2997-2013
person.identifier.scopus-author-id57192071511
person.identifier.scopus-author-id11440407500
person.identifier.scopus-author-id15832103400
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.typearticlept_PT
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