Analysis of the mode shapes of Kaplan runners

To prevent lifetime shortening and premature failure in turbine runners, it is of paramount importance to analyse and understand its dynamic response and determine the factors that affect it. In this paper, the dynamic response of a Kaplan runner is analysed in air by numerical and experimental meth...

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Autores: Moraga González, Greco Alonso, Egusquiza Montagut, Mònica|||0000-0003-1777-1840, Valentín Ruiz, David|||0000-0001-7125-0734, Valero Ferrando, Ma. del Carmen|||0000-0002-4603-1457, Presas Batlló, Alexandre|||0000-0002-6041-4139
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/370963
Acceso en línea:https://hdl.handle.net/2117/370963
https://dx.doi.org/10.3390/app12136708
Access Level:acceso abierto
Palabra clave:Vibration
Hydraulic turbines
Modal analysis
Mode shapes
Natural frequencies
Vibrations
Bladed disks
Kaplan turbines
Vibració
Turbines hidràuliques
Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
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oai_identifier_str oai:upcommons.upc.edu:2117/370963
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repository_id_str
spelling Analysis of the mode shapes of Kaplan runnersMoraga González, Greco AlonsoEgusquiza Montagut, Mònica|||0000-0003-1777-1840Valentín Ruiz, David|||0000-0001-7125-0734Valero Ferrando, Ma. del Carmen|||0000-0002-4603-1457Presas Batlló, Alexandre|||0000-0002-6041-4139VibrationHydraulic turbinesModal analysisMode shapesNatural frequenciesVibrationsBladed disksKaplan turbinesVibracióTurbines hidràuliquesÀrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluidsTo prevent lifetime shortening and premature failure in turbine runners, it is of paramount importance to analyse and understand its dynamic response and determine the factors that affect it. In this paper, the dynamic response of a Kaplan runner is analysed in air by numerical and experimental methods. First, to start the analysis of Kaplan runner mode shapes, its geometry is simplified and modelled as a bladed disk. Bladed disks with different blade numbers are investigated, by numerical simulation, in order to understand the influence of this parameter on its modal characteristics. Then, mode shapes extracted are characterized and a classification is proposed. Second, an existing Kaplan runner is simulated by Finite Elements Method (FEM) and its mode shapes are extracted. The obtained results are contrasted with the bladed disks mode shapes, in order to validate the classification proposed. The simulated Kaplan runner is also experimentally studied. A numerical modal analysis is carried out in the real runner. Different, global and local, mode shapes are identified. The global mode shapes extracted by numerical and experimental modal analysis are compared and discussed. Finally, the local mode shapes identified are commented and explained by means of numerical simulation.Peer ReviewedMultidisciplinary Digital Publishing Institute20222022-07-0220222022-07-25journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/370963https://dx.doi.org/10.3390/app12136708reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3709632026-05-27T15:37:01Z
dc.title.none.fl_str_mv Analysis of the mode shapes of Kaplan runners
title Analysis of the mode shapes of Kaplan runners
spellingShingle Analysis of the mode shapes of Kaplan runners
Moraga González, Greco Alonso
Vibration
Hydraulic turbines
Modal analysis
Mode shapes
Natural frequencies
Vibrations
Bladed disks
Kaplan turbines
Vibració
Turbines hidràuliques
Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
title_short Analysis of the mode shapes of Kaplan runners
title_full Analysis of the mode shapes of Kaplan runners
title_fullStr Analysis of the mode shapes of Kaplan runners
title_full_unstemmed Analysis of the mode shapes of Kaplan runners
title_sort Analysis of the mode shapes of Kaplan runners
dc.creator.none.fl_str_mv Moraga González, Greco Alonso
Egusquiza Montagut, Mònica|||0000-0003-1777-1840
Valentín Ruiz, David|||0000-0001-7125-0734
Valero Ferrando, Ma. del Carmen|||0000-0002-4603-1457
Presas Batlló, Alexandre|||0000-0002-6041-4139
author Moraga González, Greco Alonso
author_facet Moraga González, Greco Alonso
Egusquiza Montagut, Mònica|||0000-0003-1777-1840
Valentín Ruiz, David|||0000-0001-7125-0734
Valero Ferrando, Ma. del Carmen|||0000-0002-4603-1457
Presas Batlló, Alexandre|||0000-0002-6041-4139
author_role author
author2 Egusquiza Montagut, Mònica|||0000-0003-1777-1840
Valentín Ruiz, David|||0000-0001-7125-0734
Valero Ferrando, Ma. del Carmen|||0000-0002-4603-1457
Presas Batlló, Alexandre|||0000-0002-6041-4139
author2_role author
author
author
author
dc.subject.none.fl_str_mv Vibration
Hydraulic turbines
Modal analysis
Mode shapes
Natural frequencies
Vibrations
Bladed disks
Kaplan turbines
Vibració
Turbines hidràuliques
Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
topic Vibration
Hydraulic turbines
Modal analysis
Mode shapes
Natural frequencies
Vibrations
Bladed disks
Kaplan turbines
Vibració
Turbines hidràuliques
Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
description To prevent lifetime shortening and premature failure in turbine runners, it is of paramount importance to analyse and understand its dynamic response and determine the factors that affect it. In this paper, the dynamic response of a Kaplan runner is analysed in air by numerical and experimental methods. First, to start the analysis of Kaplan runner mode shapes, its geometry is simplified and modelled as a bladed disk. Bladed disks with different blade numbers are investigated, by numerical simulation, in order to understand the influence of this parameter on its modal characteristics. Then, mode shapes extracted are characterized and a classification is proposed. Second, an existing Kaplan runner is simulated by Finite Elements Method (FEM) and its mode shapes are extracted. The obtained results are contrasted with the bladed disks mode shapes, in order to validate the classification proposed. The simulated Kaplan runner is also experimentally studied. A numerical modal analysis is carried out in the real runner. Different, global and local, mode shapes are identified. The global mode shapes extracted by numerical and experimental modal analysis are compared and discussed. Finally, the local mode shapes identified are commented and explained by means of numerical simulation.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-07-02
2022
2022-07-25
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/370963
https://dx.doi.org/10.3390/app12136708
url https://hdl.handle.net/2117/370963
https://dx.doi.org/10.3390/app12136708
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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