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dc.contributor.authorRoig Bauzà, Rafel
dc.contributor.authorTorre Rodríguez, Óscar de la
dc.contributor.authorJou Santacreu, Esteban
dc.contributor.authorEscaler Puigoriol, Francesc Xavier
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat en Enginyeria Mecànica, Fluids i Aeronàutica
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Mecànica de Fluids
dc.identifier.citationRoig, R. [et al.]. Numerical modal analysis of a Kaplan turbine runner. A: IAHR Young Professionals Congress. "Proceedings of the 1st IAHR Young Professionals Congress". 2020, p. 144-145. ISBN 978-90-82484-6-63.
dc.description.abstractThe aim of the research has been to investigate the change of dynamic behavior of a Kaplan turbine runner when submerged in still water. More specifically, the effects of the added mass on the modes of vibration have been quantified. For that, the modes of vibration of the runner in vacuum, in air and in water have been simulated with a coupled Acoustic-Structural modal analysis and, from their comparison, the reduction of the natural frequencies and the possible changes of the mode shapes have been determined. The results show that the typically assumed invariance of all the mode shapes of a structure when submerged in a dense fluid is not fully accomplished in this particular geometry. And regards to the frequency reduction ratios, they are found to be similar for the first six modes with an average value of about 37%.
dc.description.sponsorshipThis project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 814958. The authors also wish to acknowledge Vattenfall for the support.
dc.format.extent2 p.
dc.rightsAttribution-NonCommercial-ShareAlike 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
dc.subject.lcshHydraulic turbines -- Fluid dynamics
dc.subject.otherKaplan runner
dc.subject.otherModal analysis
dc.subject.otherFluid structure interaction
dc.subject.otherFrequency reduction ratio
dc.subject.otherMode shape
dc.titleNumerical modal analysis of a Kaplan turbine runner
dc.typeConference lecture
dc.subject.lemacTurbines hidràuliques
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/814958/EU/Active Flow Control system FOR improving HYDRaulic turbine performances at off-design Operation/AFC4Hydro
local.citation.authorRoig, R.; De La Torre, O.; Jou, E.; Escaler, X.
local.citation.contributorIAHR Young Professionals Congress
local.citation.publicationNameProceedings of the 1st IAHR Young Professionals Congress

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