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Evaluation of Numerical Variable Density Approach to Cryogenic Jets

2012-11-06Journal article Embargoed access
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dc.contributor.authorAntunes, Eduardo Luís Santos Farias
dc.contributor.authorSilva, André
dc.contributor.authorBarata, Jorge M M
dc.date.accessioned2022-04-07T08:22:34Z
dc.date.embargo2060-11-06
dc.date.issued2012-11-06
dc.description.abstractThe present work is devoted to study cryogenic nitrogen jets in high subcritical conditions. Fuel injection is one of the great challenges in engineering of diesel engines, gas turbines and rocket engines, combining in the last one also the injection of oxidizer. It is widely known that the increase of operation pressures and temperatures increases engine efficiency and reduces fuel specific consumption. Thus, it is a general trend in modern engines the operation in increasingly higher pressures. However at higher chamber pressures the injected fluids may experience ambient conditions exceeding the critical values. Several authors stated that at these conditions the injected fluids suffers a change of its properties, and the traditional two-phase flow models cannot correctly predict the jet behavior at these conditions, thus new computational models are needed for these specific conditions. Barata et al. [18] performed a numerical investigation aimed to evaluate the applicability of an incompressible but variable density model in liquid jets under sub-to-supercritical conditions. The results achieved agree well with the experimental data but they only considered intermediate density ratios from 0.05 to 0.14. The objective of the present work was to extend the investigation of Ref. 18 to lower density ratios from 0.025 to 0.045 which correspond to cases with subcritical chamber pressures. The obtained results agree well with the experimental and numerical data of Chehroudi et al. presented in Ref. 18. It was also found in this work that the computational model does not offers valid results for density ratios lower than 0.025.pt_PT
dc.description.sponsorshipFundação para a Ciência e a Tecnologiapt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAntunes, E., Silva, A.R.R., Barata, J.M.M. Evaluation of Numerical Variable Density Approach to Cryogenic Jets 50th Aerospace Sciences Meeting, Nashville, Tennessee, EUA, 9-12 janeiro, 2012 DOI: 10.2514/6.2012-1282pt_PT
dc.identifier.doi10.2514/6.2012-1282pt_PT
dc.identifier.isbn978-1-60086-936-5
dc.identifier.urihttp://hdl.handle.net/10400.6/12181
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Institute of Aeronautics and Astronautics Incpt_PT
dc.relation.publisherversionhttps://arc.aiaa.org/doi/10.2514/6.2012-1282pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCombustion Chamberspt_PT
dc.subjectVelocity Profilespt_PT
dc.subjectNumerical Modelingpt_PT
dc.subjectConservation Equationspt_PT
dc.subjectSpace Shuttle Main Enginept_PT
dc.subjectCritical Temperaturept_PT
dc.subjectMathematical Modelspt_PT
dc.subjectFuel Injectionpt_PT
dc.subjectKinetic Energypt_PT
dc.subjectVorticespt_PT
dc.titleEvaluation of Numerical Variable Density Approach to Cryogenic Jetspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceNashville, Tennesseept_PT
oaire.citation.title50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Expositionpt_PT
person.familyNameResende Rodrigues da Silva
person.familyNameMartins Barata
person.givenNameAndré
person.givenNameJorge Manuel
person.identifierJ-4185-2012
person.identifierhFY_5JYAAAAJ&hl
person.identifier.ciencia-id8219-4B2B-E1C7
person.identifier.ciencia-idF611-BBCC-DAA8
person.identifier.orcid0000-0002-4901-7140
person.identifier.orcid0000-0001-9014-5008
person.identifier.scopus-author-id11440407500
person.identifier.scopus-author-id11439470600
rcaap.embargofct© 2012 by the American Institute of Aeronautics and Astronautics, Inc.pt_PT
rcaap.rightsembargoedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication908e150d-3890-457c-b5da-09c84671cb93
relation.isAuthorOfPublicationc4346556-933d-4f70-9b6d-8e1670d57be6
relation.isAuthorOfPublication.latestForDiscoveryc4346556-933d-4f70-9b6d-8e1670d57be6

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