Comparison of two methods of mathematical modeling in hydrodynamic sealing gap

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dc.contributor.authorKrutil, Jaroslavcs
dc.contributor.authorFojtášek, Kamilcs
dc.contributor.authorDvořák, Lukášcs
dc.coverage.issue5cs
dc.coverage.volume92cs
dc.date.issued2015-05-06cs
dc.description.abstractThe aim of work is to compare two possible methods of mathematical modeling of hydrodynamic instabilities. This comparison is performed by monitoring the formation and evolution of Taylor vortices in hydrodynamic sealing gap. Sealing gaps are a part of the hydraulic machines with the impeller, such as turbines and pumps, and they have an effect on the volumetric efficiency of these devices. This work presents two examples of sealing gaps. These examples are closed sealing gap and modified sealing gap with expansion chamber. On these two examples are applied procedures of solution contained in CFD software (ANSYS Fluent 14.5). In ANSYS Fluent is two possible basic approaches of solution this task: the moving wall method and the sliding mesh method. The result of work is monitoring the impact of the expansion chamber on the formation of hydrodynamic instabilities in the sealing gap. Another result is comparison of two used methods of mathematical modeling, which shows that both methods can be used for similar tasks.en
dc.formattextcs
dc.format.extent305-312cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationEPJ Web of Conferences. 2015, vol. 92, issue 5, p. 305-312.en
dc.identifier.doi10.1051/epjconf/20159202040cs
dc.identifier.issn2100-014Xcs
dc.identifier.other114522cs
dc.identifier.urihttp://hdl.handle.net/11012/201336
dc.language.isoencs
dc.publisherEDP Sciencescs
dc.relation.ispartofEPJ Web of Conferencescs
dc.relation.urihttps://www.epj-conferences.org/articles/epjconf/abs/2015/11/epjconf_efm2014_02040/epjconf_efm2014_02040.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.subjectMathematical modelingen
dc.subjectCFDen
dc.subjectsealing gapen
dc.subjectflow.en
dc.titleComparison of two methods of mathematical modeling in hydrodynamic sealing gapen
dc.title.alternativeSrovnání dvou metod matematického modelování v hydrodynamického těsnicí spářecs
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-114522en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:46:52en
sync.item.modts2025.01.17 18:41:51en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Energetický ústavcs
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