Mostra el registre d'ítem simple

dc.contributor.authorZhang, Ming
dc.contributor.authorValentín Ruiz, David
dc.contributor.authorValero Ferrando, Ma. del Carmen
dc.contributor.authorEgusquiza Montagut, Mònica
dc.contributor.authorZhao, Weiqiang
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Mecànica de Fluids
dc.date.accessioned2018-09-25T13:05:58Z
dc.date.available2018-09-25T13:05:58Z
dc.date.issued2018-01-01
dc.identifier.citationZhang, M., Valentin, D., Valero, M., Egusquiza, M., Zhao, W. Numerical study on the dynamic behavior of a francis turbine runner model with a crack. "Energies", 1 Gener 2018, vol. 11, núm. 7, p. 1630-1-1630-18.
dc.identifier.issn1996-1073
dc.identifier.urihttp://hdl.handle.net/2117/121492
dc.description.abstractCrack appearance in the blade is the most common type of fatigue damage in Francis turbines. However, it is sometimes difficult to detect cracks in time using the current monitoring system, even when they are very large. To better monitor cracks, it is imperative to research the effect of a crack on the dynamic behavior of a Francis turbine. In this paper, the dynamic behavior of a Francis turbine runner model with a crack has been researched numerically. The intact numerical model was first validated by the experimental data available. Then, a crack was created at the intersection line between one blade and the crown. The change in dynamic behavior with increasing crack length has been investigated. Crack-induced vibration localization theory has been used to explain the dynamic behavior changes due to the crack. Modal analysis showed that the adopted theory could basically explain the modal behavior change due to the crack. The FFT results of the modal shapes and the localization factors (LF) has been used to explain the forced response changes due to the crack. Based on the above analysis, the challenge of crack monitoring has been analyzed. This research provides some references for more advanced monitoring technologies.
dc.language.isoeng
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
dc.subject.lcshFluids--Industrial applications
dc.subject.otherFrancis turbine
dc.subject.otherCrack
dc.subject.otherDynamic behavior
dc.subject.otherVibration localization
dc.subject.otherLumped parameter mode
dc.subject.otherLocalization factor
dc.subject.otherForced response
dc.titleNumerical study on the dynamic behavior of a francis turbine runner model with a crack
dc.typeArticle
dc.subject.lemacMecànica de fluids
dc.contributor.groupUniversitat Politècnica de Catalunya. FLUIDS - Enginyeria de Fluids
dc.contributor.groupUniversitat Politècnica de Catalunya. CDIF - Centre de Diagnòstic Industrial i Fluidodinàmica
dc.identifier.doi10.3390/en11071630
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.mdpi.com/1996-1073/11/7/1630
dc.rights.accessOpen Access
local.identifier.drac23331789
dc.description.versionPostprint (published version)
local.citation.authorZhang, M.; Valentin, D.; Valero, M.; Egusquiza, M.; Zhao, W.
local.citation.publicationNameEnergies
local.citation.volume11
local.citation.number7
local.citation.startingPage1630-1
local.citation.endingPage1630-18


Fitxers d'aquest items

Thumbnail

Aquest ítem apareix a les col·leccions següents

Mostra el registre d'ítem simple