Vibrations of wind turbine blades in standstill: Mapping the influence of the inflow angles

The present investigation used numerical simulations to study the vibrations of a wind turbine blade in standstill. Such vibrations are presumed to affect horizontal axis wind turbine designs and can jeopardize the structural integrity of the machine. The applied numerical methods relied on a fluid–...

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Detalles Bibliográficos
Autores: González Horcas, Sergio|||0000-0002-4034-3118, Sorensen, Niels N., Zahle, Frederik, Pirrung, Georg, Barlas, Thanasis
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:2117/427444
Acceso en línea:https://hdl.handle.net/2117/427444
https://dx.doi.org/10.1063/5.0088036
Access Level:acceso abierto
Palabra clave:Structural vibrations
Wind turbines
Vortex tube
Finite-element analysis
Fourier analysis
Computational fluid dynamics
Fluid dynamics
Aerodynamics
Àrees temàtiques de la UPC::Aeronàutica i espai::Aerodinàmica
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oai_identifier_str oai:upcommons.upc.edu:2117/427444
network_acronym_str ES
network_name_str España
repository_id_str
spelling Vibrations of wind turbine blades in standstill: Mapping the influence of the inflow anglesGonzález Horcas, Sergio|||0000-0002-4034-3118Sorensen, Niels N.Zahle, FrederikPirrung, GeorgBarlas, ThanasisStructural vibrationsWind turbinesVortex tubeFinite-element analysisFourier analysisComputational fluid dynamicsFluid dynamicsAerodynamicsÀrees temàtiques de la UPC::Aeronàutica i espai::AerodinàmicaThe present investigation used numerical simulations to study the vibrations of a wind turbine blade in standstill. Such vibrations are presumed to affect horizontal axis wind turbine designs and can jeopardize the structural integrity of the machine. The applied numerical methods relied on a fluid–structure interaction (FSI) approach, coupling a computational fluid dynamics (CFD) solver with a multibody finite-element structural solver. A 96-m-long wind turbine blade was studied for a large parametric space, accounting for the variation of both pitch and inclination. The inclination was defined as the angle between the freestream velocity and the cross-sectional plane at the root, allowing for the introduction of a flow component in the spanwise direction. The pitch variation corresponded to the rotation of the inflow around the spanwise axis, steering the angles of attack seen by the airfoils. Two regimes of vibrations were characterized, depending on the considered range of the inclination angle. For high inclinations, the pitch angles leading to vibrations clustered around a particular region of the parametric space, and the appearance of large oscillations was accompanied by the synchronization of the loading with the frequency of motion. At low inclination angles, the mechanism triggering vibrations was relatively similar, even if the excitation spectrum was richer, and the critical pitch angles seemed to be more scattered. Regardless of the inflow, the problem was highly three-dimensional, and several complex flow phenomena such as oblique shedding and phase dislocations were identified.Peer Reviewed20222022-05-0120252025-04-03journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/427444https://dx.doi.org/10.1063/5.0088036reponame: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:2117/4274442026-05-27T15:37:01Z
dc.title.none.fl_str_mv Vibrations of wind turbine blades in standstill: Mapping the influence of the inflow angles
title Vibrations of wind turbine blades in standstill: Mapping the influence of the inflow angles
spellingShingle Vibrations of wind turbine blades in standstill: Mapping the influence of the inflow angles
González Horcas, Sergio|||0000-0002-4034-3118
Structural vibrations
Wind turbines
Vortex tube
Finite-element analysis
Fourier analysis
Computational fluid dynamics
Fluid dynamics
Aerodynamics
Àrees temàtiques de la UPC::Aeronàutica i espai::Aerodinàmica
title_short Vibrations of wind turbine blades in standstill: Mapping the influence of the inflow angles
title_full Vibrations of wind turbine blades in standstill: Mapping the influence of the inflow angles
title_fullStr Vibrations of wind turbine blades in standstill: Mapping the influence of the inflow angles
title_full_unstemmed Vibrations of wind turbine blades in standstill: Mapping the influence of the inflow angles
title_sort Vibrations of wind turbine blades in standstill: Mapping the influence of the inflow angles
dc.creator.none.fl_str_mv González Horcas, Sergio|||0000-0002-4034-3118
Sorensen, Niels N.
Zahle, Frederik
Pirrung, Georg
Barlas, Thanasis
author González Horcas, Sergio|||0000-0002-4034-3118
author_facet González Horcas, Sergio|||0000-0002-4034-3118
Sorensen, Niels N.
Zahle, Frederik
Pirrung, Georg
Barlas, Thanasis
author_role author
author2 Sorensen, Niels N.
Zahle, Frederik
Pirrung, Georg
Barlas, Thanasis
author2_role author
author
author
author
dc.subject.none.fl_str_mv Structural vibrations
Wind turbines
Vortex tube
Finite-element analysis
Fourier analysis
Computational fluid dynamics
Fluid dynamics
Aerodynamics
Àrees temàtiques de la UPC::Aeronàutica i espai::Aerodinàmica
topic Structural vibrations
Wind turbines
Vortex tube
Finite-element analysis
Fourier analysis
Computational fluid dynamics
Fluid dynamics
Aerodynamics
Àrees temàtiques de la UPC::Aeronàutica i espai::Aerodinàmica
description The present investigation used numerical simulations to study the vibrations of a wind turbine blade in standstill. Such vibrations are presumed to affect horizontal axis wind turbine designs and can jeopardize the structural integrity of the machine. The applied numerical methods relied on a fluid–structure interaction (FSI) approach, coupling a computational fluid dynamics (CFD) solver with a multibody finite-element structural solver. A 96-m-long wind turbine blade was studied for a large parametric space, accounting for the variation of both pitch and inclination. The inclination was defined as the angle between the freestream velocity and the cross-sectional plane at the root, allowing for the introduction of a flow component in the spanwise direction. The pitch variation corresponded to the rotation of the inflow around the spanwise axis, steering the angles of attack seen by the airfoils. Two regimes of vibrations were characterized, depending on the considered range of the inclination angle. For high inclinations, the pitch angles leading to vibrations clustered around a particular region of the parametric space, and the appearance of large oscillations was accompanied by the synchronization of the loading with the frequency of motion. At low inclination angles, the mechanism triggering vibrations was relatively similar, even if the excitation spectrum was richer, and the critical pitch angles seemed to be more scattered. Regardless of the inflow, the problem was highly three-dimensional, and several complex flow phenomena such as oblique shedding and phase dislocations were identified.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-05-01
2025
2025-04-03
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/2117/427444
https://dx.doi.org/10.1063/5.0088036
url https://hdl.handle.net/2117/427444
https://dx.doi.org/10.1063/5.0088036
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.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 15.812429

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