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dc.contributor.authorBaidar B.-
dc.contributor.authorNicolle J.-
dc.contributor.authorGandhi, Bhupendra K.-
dc.contributor.authorCervantes M.J.-
dc.identifier.citationProceedings of IOP Conference Series: Earth and Environmental Science, (2019)-
dc.description.abstractThe Winter-Kennedy (WK) method is a widely used index testing approach, which provides a relative or index value of the discharge that can allow to determine the on-cam relationship between blade and guide vane angles for Kaplan turbines. However, some discrepancies were noticed in previous studies using the WK approach. In this paper, a numerical model of a Kaplan model turbine is used to study the effects of upstream and downstream flow conditions on the WK coefficients. Experiment on the model turbine is used to validate unsteady CFD simulations. The CFD results show that the inflow condition affects the pressure distribution inside the spiral casing and hence the WK results. The WK coefficients fluctuate with high amplitude - suggesting using a larger sampling time for on-site measurement as well. The study also concludes that to limit the impact of a change in runner blade angle on the coefficients, the more suitable WK locations are at the beginning of the spiral casing with the inner pressure tap placed between stay vanes on the top wall. © 2019 Published under licence by IOP Publishing Ltd.-
dc.publisherInstitute of Physics Publishing-
dc.relation.ispartofProceedings of IOP Conference Series: Earth and Environmental Science-
dc.subjectComputational fluid dynamics-
dc.subjectHydraulic machinery-
dc.subjectHydraulic motors-
dc.subjectKaplan turbines-
dc.subjectTurbomachine blades-
dc.subjectDownstream flow-
dc.subjectHigh amplitudes-
dc.subjectInflow conditions-
dc.subjectInner pressure-
dc.subjectOn-site measurement-
dc.subjectSampling time-
dc.subjectSpiral casing-
dc.subjectUnsteady cfd simulations-
dc.subjectTurbine components-
dc.titleSensitivity of the Winter-Kennedy method to inlet and runner blade angle change on a Kaplan turbine-
dc.typeConference Paper-
dc.affiliationBaidar, B., Department of Engineering Sciences and Mathematics, Luleå University of Technology, Luleå, 971 87, Sweden-
dc.affiliationNicolle, J., Institut de Recherche d'Hydro-Québec, Varennes, QC J3X 1S1, Canada-
dc.affiliationGandhi, B.K., Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, India-
dc.affiliationCervantes, M.J., Department of Engineering Sciences and Mathematics, Luleå University of Technology, Luleå, 971 87, Sweden-
dc.description.fundingThe research presented was carried out as a part of ‘Swedish Hydropower Centre-SVC†and supported by the “Swedish strategic research program StandUp for Energy. SVC has been established by the Swedish Energy Agency, Elforsk and Svenska Kraftnät together with Luleå University of Technology, The Royal Institute of Technology (KTH), Chalmers University of Technology, and Uppsala University (
dc.identifier.conferencedetails29th IAHR Symposium on Hydraulic Machinery and Systems, IAHR 2018, 16-21 September 2018-
Appears in Collections:Conference Publications [ME]

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