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dc.contributor.authorSeixlack, Andre Luiz [UNESP]
dc.contributor.authorPrata, Alvaro Toubes
dc.contributor.authorMelo, Claudio
dc.identifier.citationJournal Of The Brazilian Society Of Mechanical Sciences And Engineering. Rio De Janeiro Rj: Abcm Brazilian Soc Mechanical Sciences & Engineering, v. 36, n. 1, p. 1-12, 2014.
dc.description.abstractThis work presents a numerical model to simulate refrigerant flow through capillary tubes, commonly used as expansion devices in refrigeration systems. The flow is divided in a single-phase region, where the refrigerant is in the subcooled liquid state, and a region of two-phase flow. The capillary tube is considered straight and horizontal. The flow is taken as one-dimensional and adiabatic. Steady-state condition is also assumed and the metastable flow phenomena are neglected. The two-fluid model, considering the hydrodynamic and thermal non-equilibrium between the liquid and vapor phases, is applied to the two-phase flow region. Comparisons are made with experimental measurements of the mass flow rate and pressure distribution along two capillary tubes working with refrigerant R-134a in different operating conditions. The results indicate that the present model provides a better estimation than the commonly employed homogeneous model. Some computational results referring to the quality, void fraction, velocities, and temperatures of each phase are presented and discussed.en
dc.publisherAbcm Brazilian Soc Mechanical Sciences & Engineering
dc.relation.ispartofJournal of the Brazilian Society of Mechanical Sciences and Engineering
dc.sourceWeb of Science
dc.subjectCapillary tubesen
dc.subjectTwo-fluid modelen
dc.subjectComputer modelingen
dc.titleA two-fluid model for refrigerant flow through adiabatic capillary tubesen
dcterms.rightsHolderAbcm Brazilian Soc Mechanical Sciences & Engineering
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade Federal de Santa Catarina (UFSC)
dc.description.affiliationSao Paulo State Univ, Coll Engn, Dept Mech Engn, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationUniv Fed Santa Catarina, POLO Res Labs Emerging Technol Cooling & Thermoph, BR-88040970 Florianopolis, SC, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Coll Engn, Dept Mech Engn, BR-15385000 Ilha Solteira, SP, Brazil
dc.rights.accessRightsAcesso restrito
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, Ilha Solteirapt
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