Computational Methods for Modelling and Optimization of Flow Control Devices

Over the last few years, the advances in size and weight for wind turbines have led to the development of flow control devices. The current work presents an innovative method to model flow control devices based on a cell-set model, such as Gurney flaps (GFs). This model reuses the cells which are ar...

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Autores: Ballesteros Coll, Alejandro, Fernández Gámiz, Unai, Aramendia Iradi, Iñigo, Zulueta Guerrero, Ekaitz, López Guede, José Manuel
Tipo de recurso: artículo
Fecha de publicación:2020
País:España
Institución:Universidad del País Vasco
Repositorio:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/45851
Acceso en línea:http://hdl.handle.net/10810/45851
Access Level:acceso abierto
Palabra clave:flow control
wind turbine
aerodynamics
Gurney flap
vortex generators
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spelling Computational Methods for Modelling and Optimization of Flow Control DevicesBallesteros Coll, AlejandroFernández Gámiz, UnaiAramendia Iradi, IñigoZulueta Guerrero, EkaitzLópez Guede, José Manuelflow controlwind turbineaerodynamicsGurney flapvortex generatorsOver the last few years, the advances in size and weight for wind turbines have led to the development of flow control devices. The current work presents an innovative method to model flow control devices based on a cell-set model, such as Gurney flaps (GFs). This model reuses the cells which are around the required geometry and a wall boundary condition is assigned to the generated region. Numerical simulations based on RANS equations and with Re=2×106 have been performed. Firstly, a performance study of the cell-set model on GFs was carried out by comparing it with a fully mesh model of a DU91W250 airfoil. A global relative error of 1.13% was calculated. Secondly, optimum GF lengths were determined (from 0% to 2% of c) for a DU97W300 airfoil and an application of them. The results showed that for lower angles of attack (AoAs) larger GFs were needed, and as the AoA increased, the optimum GF length value decreased. For the purpose of studying the effects generated by two flow control devices (vortex generators (VGs) and optimum GF) working together, a triangular VG based on the jBAY model was implemented. Resulting data indicated, as expected, that when both flow control devices were implemented, higher CL and lower CD values appeared.The authors are thankful to the government of the Basque Country and the University of the Basque Country UPV/EHU for the SAIOTEK (S-PE11UN112) and EHU12/26 research programs, respectively.MDPI2020202020202020info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/45851reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoIngléshttps://www.mdpi.com/1996-1073/13/14/3710info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).oai:addi.ehu.eus:10810/458512026-06-18T09:23:17Z
dc.title.none.fl_str_mv Computational Methods for Modelling and Optimization of Flow Control Devices
title Computational Methods for Modelling and Optimization of Flow Control Devices
spellingShingle Computational Methods for Modelling and Optimization of Flow Control Devices
Ballesteros Coll, Alejandro
flow control
wind turbine
aerodynamics
Gurney flap
vortex generators
title_short Computational Methods for Modelling and Optimization of Flow Control Devices
title_full Computational Methods for Modelling and Optimization of Flow Control Devices
title_fullStr Computational Methods for Modelling and Optimization of Flow Control Devices
title_full_unstemmed Computational Methods for Modelling and Optimization of Flow Control Devices
title_sort Computational Methods for Modelling and Optimization of Flow Control Devices
dc.creator.none.fl_str_mv Ballesteros Coll, Alejandro
Fernández Gámiz, Unai
Aramendia Iradi, Iñigo
Zulueta Guerrero, Ekaitz
López Guede, José Manuel
author Ballesteros Coll, Alejandro
author_facet Ballesteros Coll, Alejandro
Fernández Gámiz, Unai
Aramendia Iradi, Iñigo
Zulueta Guerrero, Ekaitz
López Guede, José Manuel
author_role author
author2 Fernández Gámiz, Unai
Aramendia Iradi, Iñigo
Zulueta Guerrero, Ekaitz
López Guede, José Manuel
author2_role author
author
author
author
dc.subject.none.fl_str_mv flow control
wind turbine
aerodynamics
Gurney flap
vortex generators
topic flow control
wind turbine
aerodynamics
Gurney flap
vortex generators
description Over the last few years, the advances in size and weight for wind turbines have led to the development of flow control devices. The current work presents an innovative method to model flow control devices based on a cell-set model, such as Gurney flaps (GFs). This model reuses the cells which are around the required geometry and a wall boundary condition is assigned to the generated region. Numerical simulations based on RANS equations and with Re=2×106 have been performed. Firstly, a performance study of the cell-set model on GFs was carried out by comparing it with a fully mesh model of a DU91W250 airfoil. A global relative error of 1.13% was calculated. Secondly, optimum GF lengths were determined (from 0% to 2% of c) for a DU97W300 airfoil and an application of them. The results showed that for lower angles of attack (AoAs) larger GFs were needed, and as the AoA increased, the optimum GF length value decreased. For the purpose of studying the effects generated by two flow control devices (vortex generators (VGs) and optimum GF) working together, a triangular VG based on the jBAY model was implemented. Resulting data indicated, as expected, that when both flow control devices were implemented, higher CL and lower CD values appeared.
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/45851
url http://hdl.handle.net/10810/45851
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://www.mdpi.com/1996-1073/13/14/3710
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/es/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.300719

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