Inner Damping of Water in Conduit of Hydraulic Power Plant

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dc.contributor.authorHimr, Danielcs
dc.contributor.authorHabán, Vladimírcs
dc.contributor.authorŠtefan, Davidcs
dc.coverage.issue13cs
dc.coverage.volume13cs
dc.date.issued2021-06-25cs
dc.description.abstractThe operation of any hydraulic power plant is accompanied by pressure pulsations that are caused by vortex rope under the runner, rotor–stator interaction and various transitions during changes in operating conditions or start-ups and shut-downs. Water in the conduit undergoes volumetric changes due to these pulsations. Compression and expansion of the water are among the mechanisms by which energy is dissipated in the system, and this corresponds to the second viscosity of water. The better our knowledge of energy dissipation, the greater the possibility of a safer and more economic operation of the hydraulic power plant. This paper focuses on the determination of the second viscosity of water in a conduit. The mathematical apparatus, which is described in the article, is applied to data obtained during commissioning tests in a water storage power plant. The second viscosity is determined using measurements of pressure pulsations in the conduit induced with a ball valve. The result shows a dependency of second viscosity on the frequency of pulsations.en
dc.description.abstractThe operation of any hydraulic power plant is accompanied by pressure pulsations that are caused by vortex rope under the runner, rotor–stator interaction and various transitions during changes in operating conditions or start-ups and shut-downs. Water in the conduit undergoes volumetric changes due to these pulsations. Compression and expansion of the water are among the mechanisms by which energy is dissipated in the system, and this corresponds to the second viscosity of water. The better our knowledge of energy dissipation, the greater the possibility of a safer and more economic operation of the hydraulic power plant. This paper focuses on the determination of the second viscosity of water in a conduit. The mathematical apparatus, which is described in the article, is applied to data obtained during commissioning tests in a water storage power plant. The second viscosity is determined using measurements of pressure pulsations in the conduit induced with a ball valve. The result shows a dependency of second viscosity on the frequency of pulsations.en
dc.formattextcs
dc.format.extent1-10cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationSustainability. 2021, vol. 13, issue 13, p. 1-10.en
dc.identifier.doi10.3390/su13137125cs
dc.identifier.issn2071-1050cs
dc.identifier.orcid0000-0003-4500-8631cs
dc.identifier.orcid0000-0002-5445-3537cs
dc.identifier.orcid0000-0003-4230-5219cs
dc.identifier.other171896cs
dc.identifier.researcheridV-9551-2017cs
dc.identifier.scopus55823004900cs
dc.identifier.scopus15729076600cs
dc.identifier.scopus55600674200cs
dc.identifier.urihttp://hdl.handle.net/11012/200868
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofSustainabilitycs
dc.relation.urihttps://www.mdpi.com/2071-1050/13/13/7125cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2071-1050/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectsecond viscosityen
dc.subjectbulk viscosityen
dc.subjectmeasurementen
dc.subjecthydraulic power planten
dc.subjectconduiten
dc.subjectpressure pulsationsen
dc.subjectdissipationen
dc.subjectdampingen
dc.subjectsecond viscosity
dc.subjectbulk viscosity
dc.subjectmeasurement
dc.subjecthydraulic power plant
dc.subjectconduit
dc.subjectpressure pulsations
dc.subjectdissipation
dc.subjectdamping
dc.titleInner Damping of Water in Conduit of Hydraulic Power Planten
dc.title.alternativeInner Damping of Water in Conduit of Hydraulic Power Planten
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-171896en
sync.item.dbtypeVAVen
sync.item.insts2025.10.14 14:52:40en
sync.item.modts2025.10.14 09:43:46en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. EÚ-odbor fluidního inženýrství Viktora Kaplanacs

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EÚ-odbor fluidního inženýrství Viktora Kaplana