Assessment of Fiber Bragg Grating sensors for monitoring induced strains on the draft tube cone of hydraulic turbines
[EN] In hydraulic turbines, several flow instabilities can take place inside the draft tube cone during off-design and transient operating conditions such as the rotating vortex rope which can severely damage the structure if sustained in time. In the frame of the AFC4Hydro H2020 research project, a...
| Autores: | , , , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/228839 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/228839 |
| Access Level: | acceso abierto |
| Palabra clave: | Hydraulic turbines Rotating vortex rope Fiber Bragg Grating sensors Strain measurement Kaplan turbine Flow instabilities |
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Assessment of Fiber Bragg Grating sensors for monitoring induced strains on the draft tube cone of hydraulic turbinesSánchez-Botello, X.Roig, R.de la Torre, O.Mulu, B.Högström, C-M.Escaler, X.Madrigal-Madrigal, Javier|||0000-0003-3156-1321Sales Maicas, Salvador|||0000-0001-9457-976XHydraulic turbinesRotating vortex ropeFiber Bragg Grating sensorsStrain measurementKaplan turbineFlow instabilities[EN] In hydraulic turbines, several flow instabilities can take place inside the draft tube cone during off-design and transient operating conditions such as the rotating vortex rope which can severely damage the structure if sustained in time. In the frame of the AFC4Hydro H2020 research project, an extensive measurement campaign has been carried out to monitor and predict this rotating vortex rope phenomenon in a reduced scale Kaplan turbine model at the Vattenfall Research and Development facility in Älvkarleby, Sweden. The hydraulic turbine model has been operated in propeller mode with a fixed blade angle corresponding to its best efficiency point. Several sensors have been placed along the test stand to monitor vibrations, strains and pressures. Concretely, the present paper assesses the performance of using Fiber Bragg Grating sensors to measure the strains induced on the draft tube cone walls with high-spatial resolution in three different zones of influence: the upper and lower flanges and the vertical cone wall between the runner outlet and the elbow. To do so, a total of 3 arrays embedding a total of 48 Fiber Bragg Grating sensors were glued inside three grooves previously machined on these particular areas of the draft tube cone. Analysing the frequency response of the different Fiber Bragg Grating sensors, the strain patterns induced by the rotating and plunging components of the rotating vortex rope have been precisely determined. Moreover, their impacts at the different part load conditions tested have also been quantified.This work was supported by the funding received from the European Union s Horizon H2020 research and innovation program under grant agreement No 814958. The authors would like to acknowledge the technical support received from Vattenfall AB.IOP PublishingEscuela Técnica Superior de Ingeniería de TelecomunicaciónDepartamento de ComunicacionesInstituto Universitario de Telecomunicación y Aplicaciones MultimediaEuropean CommissionRepositorio Institucional de la Universitat Politècnica de València Riunet20242024-01-01journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/228839reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengEuropean Commission https://doi.org/10.13039/501100000780 H2020 814958 Active Flow Control system FOR improving HYDRaulic turbine performances at off-design Operationopen accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento (by)http://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/2288392026-06-13T07:49:27Z |
| dc.title.none.fl_str_mv |
Assessment of Fiber Bragg Grating sensors for monitoring induced strains on the draft tube cone of hydraulic turbines |
| title |
Assessment of Fiber Bragg Grating sensors for monitoring induced strains on the draft tube cone of hydraulic turbines |
| spellingShingle |
Assessment of Fiber Bragg Grating sensors for monitoring induced strains on the draft tube cone of hydraulic turbines Sánchez-Botello, X. Hydraulic turbines Rotating vortex rope Fiber Bragg Grating sensors Strain measurement Kaplan turbine Flow instabilities |
| title_short |
Assessment of Fiber Bragg Grating sensors for monitoring induced strains on the draft tube cone of hydraulic turbines |
| title_full |
Assessment of Fiber Bragg Grating sensors for monitoring induced strains on the draft tube cone of hydraulic turbines |
| title_fullStr |
Assessment of Fiber Bragg Grating sensors for monitoring induced strains on the draft tube cone of hydraulic turbines |
| title_full_unstemmed |
Assessment of Fiber Bragg Grating sensors for monitoring induced strains on the draft tube cone of hydraulic turbines |
| title_sort |
Assessment of Fiber Bragg Grating sensors for monitoring induced strains on the draft tube cone of hydraulic turbines |
| dc.creator.none.fl_str_mv |
Sánchez-Botello, X. Roig, R. de la Torre, O. Mulu, B. Högström, C-M. Escaler, X. Madrigal-Madrigal, Javier|||0000-0003-3156-1321 Sales Maicas, Salvador|||0000-0001-9457-976X |
| author |
Sánchez-Botello, X. |
| author_facet |
Sánchez-Botello, X. Roig, R. de la Torre, O. Mulu, B. Högström, C-M. Escaler, X. Madrigal-Madrigal, Javier|||0000-0003-3156-1321 Sales Maicas, Salvador|||0000-0001-9457-976X |
| author_role |
author |
| author2 |
Roig, R. de la Torre, O. Mulu, B. Högström, C-M. Escaler, X. Madrigal-Madrigal, Javier|||0000-0003-3156-1321 Sales Maicas, Salvador|||0000-0001-9457-976X |
| author2_role |
author author author author author author author |
| dc.contributor.none.fl_str_mv |
Escuela Técnica Superior de Ingeniería de Telecomunicación Departamento de Comunicaciones Instituto Universitario de Telecomunicación y Aplicaciones Multimedia European Commission Repositorio Institucional de la Universitat Politècnica de València Riunet |
| dc.subject.none.fl_str_mv |
Hydraulic turbines Rotating vortex rope Fiber Bragg Grating sensors Strain measurement Kaplan turbine Flow instabilities |
| topic |
Hydraulic turbines Rotating vortex rope Fiber Bragg Grating sensors Strain measurement Kaplan turbine Flow instabilities |
| description |
[EN] In hydraulic turbines, several flow instabilities can take place inside the draft tube cone during off-design and transient operating conditions such as the rotating vortex rope which can severely damage the structure if sustained in time. In the frame of the AFC4Hydro H2020 research project, an extensive measurement campaign has been carried out to monitor and predict this rotating vortex rope phenomenon in a reduced scale Kaplan turbine model at the Vattenfall Research and Development facility in Älvkarleby, Sweden. The hydraulic turbine model has been operated in propeller mode with a fixed blade angle corresponding to its best efficiency point. Several sensors have been placed along the test stand to monitor vibrations, strains and pressures. Concretely, the present paper assesses the performance of using Fiber Bragg Grating sensors to measure the strains induced on the draft tube cone walls with high-spatial resolution in three different zones of influence: the upper and lower flanges and the vertical cone wall between the runner outlet and the elbow. To do so, a total of 3 arrays embedding a total of 48 Fiber Bragg Grating sensors were glued inside three grooves previously machined on these particular areas of the draft tube cone. Analysing the frequency response of the different Fiber Bragg Grating sensors, the strain patterns induced by the rotating and plunging components of the rotating vortex rope have been precisely determined. Moreover, their impacts at the different part load conditions tested have also been quantified. |
| publishDate |
2024 |
| dc.date.none.fl_str_mv |
2024 2024-01-01 |
| 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://riunet.upv.es/handle/10251/228839 |
| url |
https://riunet.upv.es/handle/10251/228839 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.relation.none.fl_str_mv |
European Commission https://doi.org/10.13039/501100000780 H2020 814958 Active Flow Control system FOR improving HYDRaulic turbine performances at off-design Operation |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Reconocimiento (by) 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 Reconocimiento (by) 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 |
IOP Publishing |
| publisher.none.fl_str_mv |
IOP Publishing |
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reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname:Universitat Politècnica de València (UPV) |
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Universitat Politècnica de València (UPV) |
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RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
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RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
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