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dc.contributor.authorLinga, Gaute
dc.contributor.authorFlåtten, Tore Halsne
dc.date.accessioned2020-02-25T12:27:18Z
dc.date.available2020-02-25T12:27:18Z
dc.date.created2019-11-26T16:11:40Z
dc.date.issued2019-10
dc.identifier.citationLinga, G., Flåtten, T. (2019) A Hierarchy of Non-Equilibrium Two-Phase Flow Models. ESAIM: Proceedings and Surveys, 66, pp. 109-143.nb_NO
dc.identifier.issn2267-3059
dc.identifier.urihttp://hdl.handle.net/11250/2643637
dc.description.abstractWe review and extend a hierarchy of relaxation models for two-phase flow. The models are derived from the non-equilibrium Baer–Nunziato model, which is endowed with relaxation source terms to drive it towards equilibrium. The source terms cause transfer of volume, heat, mass and momentum due to differences between the phases in pressure, temperature, chemical potential and velocity, respectively. In the context of two-phase flow models, the subcharacteristic condition implies that the sound speed of an equilibrium system can never exceed that of the relaxation system. Here, previous work by Flåtten and Lund [Math. Models Methods Appl. Sci., 21 (12), 2011, 2379–2407] and Lund [SIAM J. Appl. Math. 72, 2012, 1713–1741] is extended to encompass two-fluid models, i.e. models with separately governed velocities for the two phases. Each remaining model in the hierarchy is derived, and analytical expressions for the sound speeds are presented. Given only physically fundamental assumptions, the subcharacteristic condition is shown to be satisfied in the entire hierarchy, either in a weak or in a strong sense.nb_NO
dc.language.isoengnb_NO
dc.publisherEDP Sciencesnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectfluidmekanikknb_NO
dc.subjectFluid mechanicsnb_NO
dc.subjectkonserveringslovernb_NO
dc.subjectconservation lawsnb_NO
dc.subjectflerfasestrømningnb_NO
dc.subjectmultiphase flownb_NO
dc.titleA Hierarchy of Non-Equilibrium Two-Phase Flow Modelsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.rights.holder© EDP Sciences, SMAI 2019nb_NO
dc.subject.nsiVDP::Mekaniske og strømningstekniske fag: 574nb_NO
dc.subject.nsiVDP::Mechanical and flow technical subjects: 574nb_NO
dc.source.pagenumber109-143nb_NO
dc.source.volume66nb_NO
dc.source.journalESAIM: Proceedings and Surveysnb_NO
dc.identifier.doi10.1051/proc/201966006
dc.identifier.cristin1752688
cristin.unitcode217,8,6,0
cristin.unitnameInstitutt for energi- og petroleumsteknologi
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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