Comparison of turbulent models in the case of a constricted tube

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dc.contributor.authorElcner, Jakubcs
dc.contributor.authorLízal, Františekcs
dc.contributor.authorJícha, Miroslavcs
dc.coverage.volume143cs
dc.date.accessioned2017-11-01T17:00:21Z
dc.date.available2017-11-01T17:00:21Z
dc.date.issued2016-11-15cs
dc.description.abstractThe validation of a proper solution is an indispensable phase of every numerical simulation. Nowadays, many turbulent models are available, whose application leads to slightly different solution of flow behaviour depending on the boundary conditions of a specific problem. It is essential to select the proper turbulence model appropriate for the given situation. The aim of this study is to select the most suitable two-equation eddy-viscosity model, which can be further used during calculations of airflow in human airways. For this purpose, geometry of a constricted tube with well-documented experimental measurements was chosen. The flow in the constricted tube was calculated using Spallart-Almaras, k-omega, k-epsilon and SST model approach using commercial software. The outcome of the comparison is a choice of the suitable model which is capable of simulating the transition of the boundary layer from laminar to turbulent flow. This transition typically arises in the upper part of the respiratory system, where the airways are constricted, specifically in the area, where the oral cavity continues through the glottis to trachea. The simulations were performed in a commercial solver Star-CCM+.en
dc.formattextcs
dc.format.extent1-4cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationEPJ Web of Conferences. 2016, vol. 143, p. 1-4.en
dc.identifier.doi10.1051/epjconf/201714302020cs
dc.identifier.issn2100-014Xcs
dc.identifier.other131514cs
dc.identifier.urihttp://hdl.handle.net/11012/70125
dc.language.isoencs
dc.publisherEDP Sciencescs
dc.relation.ispartofEPJ Web of Conferencescs
dc.relation.urihttps://www.epj-conferences.org/articles/epjconf/abs/2017/12/epjconf_efm2017_02020/epjconf_efm2017_02020.htmlcs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2100-014X/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectCFDen
dc.subjectComparisonen
dc.subjectConstricted tubeen
dc.subjectFlowen
dc.titleComparison of turbulent models in the case of a constricted tubeen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-131514en
sync.item.dbtypeVAVen
sync.item.insts2021.02.26 00:57:40en
sync.item.modts2021.02.26 00:15:03en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Energetický ústavcs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. EÚ-odbor termomechaniky a techniky prostředícs
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