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On the Modeling of a Spray Impingement Onto a Hot Surface

dc.contributor.authorSilva, A. R. R.
dc.contributor.authorRodrigues, Christian
dc.contributor.authorBarata, Jorge M M
dc.date.accessioned2022-04-04T13:23:36Z
dc.date.embargo2060-08-09
dc.date.issued2015-08-09
dc.description.abstractThe present investigation addresses the impingement of a spray onto a heated solid surface under crossflow conditions at low pressure injection - typical of port-injection engines - during cold start. The characteristics of the initial spray are established by employing an empirical procedure, which relies on a comprehensive set of free spray measurements. This computational study considers the presence of a crossflow moving perpendicularly to an interposed surface and the formation of a dynamic liquid film over the impingement wall. Both previous conditions are often neglected in numerical simulations, despite their importance on the final outcome. Distinct wall and crossflow temperatures are analyzed systematically to evaluate the influence of droplets evaporation on the final outcome of spray impingement, and, particularly, on the distribution of the thin liquid film over the surface. The present computational model already proved to deliver accurate predictions of the spray/wall interactions under different conditions. In this work, the conditions are extrapolated to a heated environment, which reproduce more adequately what is found in in-cylinder situations. The computational model is adapted to meet the new requirements and perform within the range of conditions for which it is now formulated. The analysis shows that higher temperatures lead to smaller impinging droplets, an increase in the number of depositing droplets but a decrease in the fraction of mass of particles contributing to the liquid film; and a more uniform distribution of the liquid layer over the surface.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologiapt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAndré Silva, Miguel Panão, Jorge Barata Advanced Statistical Analysis of the Collision of Wall Jet with a Boundary Layer First Thermal and Fluids Engineering Summer Conference (TFESC), New York, NY, EUA, 9-12 agosto, 2015 DOI: 10.1615/TFESC1.asp.012935pt_PT
dc.identifier.doi10.1615/TFESC1.hte.012893pt_PT
dc.identifier.isbn978-156700431-1
dc.identifier.issn23791748
dc.identifier.urihttp://hdl.handle.net/10400.6/12176
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherBegell Housept_PT
dc.relation.publisherversionhttps://dl.astfe.org/conferences/tfesc,1d645970211a63c7,631c46322afd469d.htmlpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCrossflowpt_PT
dc.subjectEvaporationpt_PT
dc.subjectHeat Solid Wallpt_PT
dc.subjectLiquid Filmpt_PT
dc.subjectSpray Impingementpt_PT
dc.titleOn the Modeling of a Spray Impingement Onto a Hot Surfacept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceNew York City, USApt_PT
oaire.citation.endPage1464pt_PT
oaire.citation.startPage1447pt_PT
oaire.citation.titleFirst Thermal and Fluids Engineering Summer Conferencept_PT
person.familyNameResende Rodrigues da Silva
person.familyNameGomes Rodrigues
person.familyNameMartins Barata
person.givenNameAndré
person.givenNameChristian
person.givenNameJorge Manuel
person.identifierJ-4185-2012
person.identifierhFY_5JYAAAAJ&hl
person.identifier.ciencia-id8219-4B2B-E1C7
person.identifier.ciencia-id7F16-AA19-E5AA
person.identifier.ciencia-idF611-BBCC-DAA8
person.identifier.orcid0000-0002-4901-7140
person.identifier.orcid0000-0002-8177-4483
person.identifier.orcid0000-0001-9014-5008
person.identifier.ridR-9636-2016
person.identifier.scopus-author-id11440407500
person.identifier.scopus-author-id55341335400
person.identifier.scopus-author-id11439470600
rcaap.embargofct© 2015 Begell House Inc.. All rights reserved.pt_PT
rcaap.rightsembargoedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication908e150d-3890-457c-b5da-09c84671cb93
relation.isAuthorOfPublication4fa3a551-beb0-4268-b336-4e2563c5756f
relation.isAuthorOfPublicationc4346556-933d-4f70-9b6d-8e1670d57be6
relation.isAuthorOfPublication.latestForDiscoveryc4346556-933d-4f70-9b6d-8e1670d57be6

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