Screening analysis and unconstrained optimization of a small-scale vertical axis wind turbine
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.energy.2021.122782 http://hdl.handle.net/11449/223008 |
Resumo: | The demand for alternative and renewable energy sources has been substantially growing in recent years, mainly steered by economic and environmental inconveniences of conventional energy sources, such as oil and its derivatives. In this context, wind energy has emerged as an attractive renewable source, envisioning possibilities of developing more efficient equipment to meet the ever-growing energy demand. In this work, we coupled Computational Fluid Dynamics (CFD) with an optimization based on response surface (RS) methodologies to find an optimal design for a small-scale NACA 0021 Darrieus vertical axis wind turbine (VAWT) operating at a tip speed ratio of 2.63. For that, we investigated four geometric parameters: number of blades (N), rotor diameter (D), chord length (c), and pitch angle (β). For the numerical model, we considered a two-dimensional, incompressible, turbulent, and unsteady flow regime. A sensitivity analysis (SA) via Morris’ method was performed to identify the influence of the four geometric parameters on the turbine aerodynamic performance. Our results reveal that the pitch angle (β) contributes the most (58%) to the turbine performance. The resulting optimized turbine design increased the conversion efficiency by 40%. Additionally, we also present a detailed discussion on the flow phenomenology considering the impact of each one of the four geometric parameters on the power coefficient. Finally, the strategy adopted here, in which a qualitative sensitivity analysis combined to the response surface and unconstrained optimization, was shown to be robust and can be applied to high-dimensional and computational-expensive CFD models to reduce costs with adequate results regarding fluid flow phenomena. |
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Repositório Institucional da UNESP |
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Screening analysis and unconstrained optimization of a small-scale vertical axis wind turbineComputational fluid dynamicsOptimizationResponse surface methodologyVertical axis wind turbineThe demand for alternative and renewable energy sources has been substantially growing in recent years, mainly steered by economic and environmental inconveniences of conventional energy sources, such as oil and its derivatives. In this context, wind energy has emerged as an attractive renewable source, envisioning possibilities of developing more efficient equipment to meet the ever-growing energy demand. In this work, we coupled Computational Fluid Dynamics (CFD) with an optimization based on response surface (RS) methodologies to find an optimal design for a small-scale NACA 0021 Darrieus vertical axis wind turbine (VAWT) operating at a tip speed ratio of 2.63. For that, we investigated four geometric parameters: number of blades (N), rotor diameter (D), chord length (c), and pitch angle (β). For the numerical model, we considered a two-dimensional, incompressible, turbulent, and unsteady flow regime. A sensitivity analysis (SA) via Morris’ method was performed to identify the influence of the four geometric parameters on the turbine aerodynamic performance. Our results reveal that the pitch angle (β) contributes the most (58%) to the turbine performance. The resulting optimized turbine design increased the conversion efficiency by 40%. Additionally, we also present a detailed discussion on the flow phenomenology considering the impact of each one of the four geometric parameters on the power coefficient. Finally, the strategy adopted here, in which a qualitative sensitivity analysis combined to the response surface and unconstrained optimization, was shown to be robust and can be applied to high-dimensional and computational-expensive CFD models to reduce costs with adequate results regarding fluid flow phenomena.São Paulo State University (Unesp) School of EngineeringSão Paulo State University (Unesp) School of EngineeringUniversidade Estadual Paulista (UNESP)Trentin, Pedro Francisco Silva [UNESP]Martinez, Pedro Henrique Barsanaor de Barros [UNESP]dos Santos, Gabriel Bertacco [UNESP]Gasparin, Elóy Esteves [UNESP]Salviano, Leandro Oliveira [UNESP]2022-04-28T19:48:09Z2022-04-28T19:48:09Z2022-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.energy.2021.122782Energy, v. 240.0360-5442http://hdl.handle.net/11449/22300810.1016/j.energy.2021.1227822-s2.0-85120827195Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEnergy219811info:eu-repo/semantics/openAccess2023-05-22T15:05:11Zoai:repositorio.unesp.br:11449/223008Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:20:50.419194Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Screening analysis and unconstrained optimization of a small-scale vertical axis wind turbine |
title |
Screening analysis and unconstrained optimization of a small-scale vertical axis wind turbine |
spellingShingle |
Screening analysis and unconstrained optimization of a small-scale vertical axis wind turbine Trentin, Pedro Francisco Silva [UNESP] Computational fluid dynamics Optimization Response surface methodology Vertical axis wind turbine |
title_short |
Screening analysis and unconstrained optimization of a small-scale vertical axis wind turbine |
title_full |
Screening analysis and unconstrained optimization of a small-scale vertical axis wind turbine |
title_fullStr |
Screening analysis and unconstrained optimization of a small-scale vertical axis wind turbine |
title_full_unstemmed |
Screening analysis and unconstrained optimization of a small-scale vertical axis wind turbine |
title_sort |
Screening analysis and unconstrained optimization of a small-scale vertical axis wind turbine |
author |
Trentin, Pedro Francisco Silva [UNESP] |
author_facet |
Trentin, Pedro Francisco Silva [UNESP] Martinez, Pedro Henrique Barsanaor de Barros [UNESP] dos Santos, Gabriel Bertacco [UNESP] Gasparin, Elóy Esteves [UNESP] Salviano, Leandro Oliveira [UNESP] |
author_role |
author |
author2 |
Martinez, Pedro Henrique Barsanaor de Barros [UNESP] dos Santos, Gabriel Bertacco [UNESP] Gasparin, Elóy Esteves [UNESP] Salviano, Leandro Oliveira [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Trentin, Pedro Francisco Silva [UNESP] Martinez, Pedro Henrique Barsanaor de Barros [UNESP] dos Santos, Gabriel Bertacco [UNESP] Gasparin, Elóy Esteves [UNESP] Salviano, Leandro Oliveira [UNESP] |
dc.subject.por.fl_str_mv |
Computational fluid dynamics Optimization Response surface methodology Vertical axis wind turbine |
topic |
Computational fluid dynamics Optimization Response surface methodology Vertical axis wind turbine |
description |
The demand for alternative and renewable energy sources has been substantially growing in recent years, mainly steered by economic and environmental inconveniences of conventional energy sources, such as oil and its derivatives. In this context, wind energy has emerged as an attractive renewable source, envisioning possibilities of developing more efficient equipment to meet the ever-growing energy demand. In this work, we coupled Computational Fluid Dynamics (CFD) with an optimization based on response surface (RS) methodologies to find an optimal design for a small-scale NACA 0021 Darrieus vertical axis wind turbine (VAWT) operating at a tip speed ratio of 2.63. For that, we investigated four geometric parameters: number of blades (N), rotor diameter (D), chord length (c), and pitch angle (β). For the numerical model, we considered a two-dimensional, incompressible, turbulent, and unsteady flow regime. A sensitivity analysis (SA) via Morris’ method was performed to identify the influence of the four geometric parameters on the turbine aerodynamic performance. Our results reveal that the pitch angle (β) contributes the most (58%) to the turbine performance. The resulting optimized turbine design increased the conversion efficiency by 40%. Additionally, we also present a detailed discussion on the flow phenomenology considering the impact of each one of the four geometric parameters on the power coefficient. Finally, the strategy adopted here, in which a qualitative sensitivity analysis combined to the response surface and unconstrained optimization, was shown to be robust and can be applied to high-dimensional and computational-expensive CFD models to reduce costs with adequate results regarding fluid flow phenomena. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-04-28T19:48:09Z 2022-04-28T19:48:09Z 2022-02-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.energy.2021.122782 Energy, v. 240. 0360-5442 http://hdl.handle.net/11449/223008 10.1016/j.energy.2021.122782 2-s2.0-85120827195 |
url |
http://dx.doi.org/10.1016/j.energy.2021.122782 http://hdl.handle.net/11449/223008 |
identifier_str_mv |
Energy, v. 240. 0360-5442 10.1016/j.energy.2021.122782 2-s2.0-85120827195 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Energy 219811 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129417791143936 |