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dc.contributor.authorChen, Jian
dc.contributor.authorEscaler Puigoriol, Francesc Xavier
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Mecànica de Fluids
dc.date.accessioned2019-05-29T09:33:43Z
dc.date.available2019-05-29T09:33:43Z
dc.date.issued2019
dc.identifier.citationChen, J.; Escaler, X. Unsteady numerical simulation of suction side leading edge cavitation in a Francis turbine runner. A: International Symposium of Cavitation and Multiphase Flow. "The 3rd International Symposium of Cavitation and Multiphase FlowShanghai, China, April 19th-22nd, 2019 ISCM2019: accepted abstracts, full papers". Shanghai University Press, 2019, p. 1-8.
dc.identifier.urihttp://hdl.handle.net/2117/133635
dc.description.abstractCavitation appearance within the runner of the water turbines is a common problem that induces vibrations and provokes the erosion of the blades. Although many investigations have been carried out in simple configurations such as 2D and 3D hydrofoils in cavitation tunnels, few works have been done to simulate the cavitation dynamic behavior in actual turbine geometries. In this paper, the unsteady numerical simulation of suction side leading edge cavitation has been carried out for the GAMM Francis runner. For that, the two-phase model available in ANSYS¿ CFX and the Shear Stress Transport (SST) turbulence model have been used. A sensitivity analysis of various model parameters has been done and the results have been validated with experimental values obtained in a reduced scale model test utility at the best efficiency point. Special attention has been given to determine if a shedding process also exists and to understand the main hydrodynamic mechanisms involved. In conclusion, the instability of the leading edge cavitation seems to be mainly caused by field pressure perturbations originating from the guide vanes or the draft tube.
dc.format.extent8 p.
dc.language.isoeng
dc.publisherShanghai University Press
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids::Màquines hidràuliques i de fluids
dc.subject.lcshTurbines--Blade
dc.subject.otherFrancis turbine
dc.subject.otherInlet blade cavitation
dc.subject.otherUnsteady flow simulation
dc.subject.otherZwart cavitation model.
dc.titleUnsteady numerical simulation of suction side leading edge cavitation in a Francis turbine runner
dc.typeConference report
dc.subject.lemacTurbines hidràuliques
dc.contributor.groupUniversitat Politècnica de Catalunya. CDIF - Centre de Diagnòstic Industrial i Fluidodinàmica
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
drac.iddocument24252472
dc.description.versionPostprint (published version)
upcommons.citation.authorChen, J.; Escaler, X.
upcommons.citation.contributorInternational Symposium of Cavitation and Multiphase Flow
upcommons.citation.publishedtrue
upcommons.citation.publicationNameThe 3rd International Symposium of Cavitation and Multiphase FlowShanghai, China, April 19th-22nd, 2019 ISCM2019: accepted abstracts, full papers
upcommons.citation.startingPage1
upcommons.citation.endingPage8


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Except where otherwise noted, content on this work is licensed under a Creative Commons license: Attribution-NonCommercial-NoDerivs 3.0 Spain