Experimental study on the influence of vibration amplitude on the fluid damping of a submerged disk
Accurate determination of modal parameters for disk-like structures submerged in heavy fluids is a topic of interest in many fields. For instance, some type of hydraulic turbomachinery can be modelled as disk structures due to the similarity in their mode shapes. Although in the recent years many st...
| Autores: | , , , , , , , , |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2023 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/396865 |
| Acesso em linha: | https://hdl.handle.net/2117/396865 https://dx.doi.org/10.1016/j.jsv.2023.118099 |
| Access Level: | acceso abierto |
| Palavra-chave: | Fluid mechanics Fluid dynamics Vibration Fluid damping Fluid structure interaction Vibrating disk Natural frequency Mode shape Resonance Mecànica de fluids Dinàmica de fluids Vibració Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
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Experimental study on the influence of vibration amplitude on the fluid damping of a submerged diskMoraga González, Greco AlonsoXia, XiangRoig López, SergiValero Ferrando, Ma. del Carmen|||0000-0002-4603-1457Valentín Ruiz, David|||0000-0001-7125-0734Egusquiza Montagut, Mònica|||0000-0003-1777-1840Zhou, LingjiuEgusquiza Estévez, Eduard|||0000-0003-1007-7901Presas Batlló, Alexandre|||0000-0002-6041-4139Fluid mechanicsFluid dynamicsVibrationFluid dampingFluid structure interactionVibrating diskNatural frequencyMode shapeResonanceMecànica de fluidsDinàmica de fluidsVibracióÀrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluidsAccurate determination of modal parameters for disk-like structures submerged in heavy fluids is a topic of interest in many fields. For instance, some type of hydraulic turbomachinery can be modelled as disk structures due to the similarity in their mode shapes. Although in the recent years many studies have analyzed and correctly predicted the fluid added mass effect on the natural frequencies and mode shapes of these types of structures, it is particularly challenging to determine fluid damping and characterize its most influential effects. In this article, the influence of vibration amplitude on the fluid damping ratio of a submerged disk, when the disk gets close to a rigid wall, is analytically and experimentally studied. Particularly, the first diametrical modes of the disk have been analyzed at different vibration amplitudes and at very small distances away from a rigid surface. The disk is put in a resonant state by means of a piezoelectric patch generating a harmonic excitation and the response is measured by means of a Laser Doppler Vibrometer (LDV). The damping ratio is obtained directly from the vibrating free decay following a sudden stop of the excitation. It is shown that the fluid damping ratio values are related to the vibration amplitude: there is a trend of increasing damping ratio as the amplitude of the vibration increases. This effect is found to be much larger for small distances between the disk and the rigid surface.Peer ReviewedElsevier20232023-10-0120232023-11-22journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/396865https://dx.doi.org/10.1016/j.jsv.2023.118099reponame: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:2117/3968652026-05-27T15:37:01Z |
| dc.title.none.fl_str_mv |
Experimental study on the influence of vibration amplitude on the fluid damping of a submerged disk |
| title |
Experimental study on the influence of vibration amplitude on the fluid damping of a submerged disk |
| spellingShingle |
Experimental study on the influence of vibration amplitude on the fluid damping of a submerged disk Moraga González, Greco Alonso Fluid mechanics Fluid dynamics Vibration Fluid damping Fluid structure interaction Vibrating disk Natural frequency Mode shape Resonance Mecànica de fluids Dinàmica de fluids Vibració Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
| title_short |
Experimental study on the influence of vibration amplitude on the fluid damping of a submerged disk |
| title_full |
Experimental study on the influence of vibration amplitude on the fluid damping of a submerged disk |
| title_fullStr |
Experimental study on the influence of vibration amplitude on the fluid damping of a submerged disk |
| title_full_unstemmed |
Experimental study on the influence of vibration amplitude on the fluid damping of a submerged disk |
| title_sort |
Experimental study on the influence of vibration amplitude on the fluid damping of a submerged disk |
| dc.creator.none.fl_str_mv |
Moraga González, Greco Alonso Xia, Xiang Roig López, Sergi Valero Ferrando, Ma. del Carmen|||0000-0002-4603-1457 Valentín Ruiz, David|||0000-0001-7125-0734 Egusquiza Montagut, Mònica|||0000-0003-1777-1840 Zhou, Lingjiu Egusquiza Estévez, Eduard|||0000-0003-1007-7901 Presas Batlló, Alexandre|||0000-0002-6041-4139 |
| author |
Moraga González, Greco Alonso |
| author_facet |
Moraga González, Greco Alonso Xia, Xiang Roig López, Sergi Valero Ferrando, Ma. del Carmen|||0000-0002-4603-1457 Valentín Ruiz, David|||0000-0001-7125-0734 Egusquiza Montagut, Mònica|||0000-0003-1777-1840 Zhou, Lingjiu Egusquiza Estévez, Eduard|||0000-0003-1007-7901 Presas Batlló, Alexandre|||0000-0002-6041-4139 |
| author_role |
author |
| author2 |
Xia, Xiang Roig López, Sergi Valero Ferrando, Ma. del Carmen|||0000-0002-4603-1457 Valentín Ruiz, David|||0000-0001-7125-0734 Egusquiza Montagut, Mònica|||0000-0003-1777-1840 Zhou, Lingjiu Egusquiza Estévez, Eduard|||0000-0003-1007-7901 Presas Batlló, Alexandre|||0000-0002-6041-4139 |
| author2_role |
author author author author author author author author |
| dc.subject.none.fl_str_mv |
Fluid mechanics Fluid dynamics Vibration Fluid damping Fluid structure interaction Vibrating disk Natural frequency Mode shape Resonance Mecànica de fluids Dinàmica de fluids Vibració Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
| topic |
Fluid mechanics Fluid dynamics Vibration Fluid damping Fluid structure interaction Vibrating disk Natural frequency Mode shape Resonance Mecànica de fluids Dinàmica de fluids Vibració Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
| description |
Accurate determination of modal parameters for disk-like structures submerged in heavy fluids is a topic of interest in many fields. For instance, some type of hydraulic turbomachinery can be modelled as disk structures due to the similarity in their mode shapes. Although in the recent years many studies have analyzed and correctly predicted the fluid added mass effect on the natural frequencies and mode shapes of these types of structures, it is particularly challenging to determine fluid damping and characterize its most influential effects. In this article, the influence of vibration amplitude on the fluid damping ratio of a submerged disk, when the disk gets close to a rigid wall, is analytically and experimentally studied. Particularly, the first diametrical modes of the disk have been analyzed at different vibration amplitudes and at very small distances away from a rigid surface. The disk is put in a resonant state by means of a piezoelectric patch generating a harmonic excitation and the response is measured by means of a Laser Doppler Vibrometer (LDV). The damping ratio is obtained directly from the vibrating free decay following a sudden stop of the excitation. It is shown that the fluid damping ratio values are related to the vibration amplitude: there is a trend of increasing damping ratio as the amplitude of the vibration increases. This effect is found to be much larger for small distances between the disk and the rigid surface. |
| publishDate |
2023 |
| dc.date.none.fl_str_mv |
2023 2023-10-01 2023 2023-11-22 |
| 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/2117/396865 https://dx.doi.org/10.1016/j.jsv.2023.118099 |
| url |
https://hdl.handle.net/2117/396865 https://dx.doi.org/10.1016/j.jsv.2023.118099 |
| 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 |
Elsevier |
| publisher.none.fl_str_mv |
Elsevier |
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reponame:UPCommons. Portal del coneixement obert de la UPC instname:Universitat Politècnica de Catalunya (UPC) |
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Universitat Politècnica de Catalunya (UPC) |
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UPCommons. Portal del coneixement obert de la UPC |
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UPCommons. Portal del coneixement obert de la UPC |
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15.301603 |