Flow analysis and optimization of a vertical axis wind turbine blade with a dimple

In this study, the influences of the geometric characteristics of a dimple on the aerodynamic properties of a vertical axis wind turbine are investigated, and its configuration optimization that maximizes the wind turbine's performance is carried out. Three parameters that control the position,...

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Autores principales:	Seungwoo Yoo, Sahuck Oh
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	vertical-axis wind turbine dimple cfd simulation optimization performance improvement Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/fb5e8e789d6d4d4396e58e11698e7845
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spelling	oai:doaj.org-article:fb5e8e789d6d4d4396e58e11698e78452021-11-04T15:00:43ZFlow analysis and optimization of a vertical axis wind turbine blade with a dimple1994-20601997-003X10.1080/19942060.2021.1989041https://doaj.org/article/fb5e8e789d6d4d4396e58e11698e78452021-01-01T00:00:00Zhttp://dx.doi.org/10.1080/19942060.2021.1989041https://doaj.org/toc/1994-2060https://doaj.org/toc/1997-003XIn this study, the influences of the geometric characteristics of a dimple on the aerodynamic properties of a vertical axis wind turbine are investigated, and its configuration optimization that maximizes the wind turbine's performance is carried out. Three parameters that control the position, size and depth of the dimple are used to parameterize the dimple's configuration and to conduct optimization. With these parameters, when the flows around the wind turbines with various dimples are compared, several meaningful physical phenomena are found. First, a strong association between the position of a dimple and the power coefficient is found where the power coefficient increases as the position of the dimple approaches the trailing edge of the wind turbine blade. Second, high-performance enhancement tends to be achieved when a dimple is small, but this attribution becomes weaker as the dimple moves toward the trailing edge. Furthermore, when the flow of the optimal wind turbine is compared with the one without a dimple, a reduction of the blade wake and delay of the flow separation can be identified. Finally, the shed vortices from the optimal wind turbine blade are weaker and decay faster than the ones shed from the wind turbine without a dimple.Seungwoo YooSahuck OhTaylor & Francis Grouparticlevertical-axis wind turbinedimplecfd simulationoptimizationperformance improvementEngineering (General). Civil engineering (General)TA1-2040ENEngineering Applications of Computational Fluid Mechanics, Vol 15, Iss 1, Pp 1666-1681 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	vertical-axis wind turbine dimple cfd simulation optimization performance improvement Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	vertical-axis wind turbine dimple cfd simulation optimization performance improvement Engineering (General). Civil engineering (General) TA1-2040 Seungwoo Yoo Sahuck Oh Flow analysis and optimization of a vertical axis wind turbine blade with a dimple
description	In this study, the influences of the geometric characteristics of a dimple on the aerodynamic properties of a vertical axis wind turbine are investigated, and its configuration optimization that maximizes the wind turbine's performance is carried out. Three parameters that control the position, size and depth of the dimple are used to parameterize the dimple's configuration and to conduct optimization. With these parameters, when the flows around the wind turbines with various dimples are compared, several meaningful physical phenomena are found. First, a strong association between the position of a dimple and the power coefficient is found where the power coefficient increases as the position of the dimple approaches the trailing edge of the wind turbine blade. Second, high-performance enhancement tends to be achieved when a dimple is small, but this attribution becomes weaker as the dimple moves toward the trailing edge. Furthermore, when the flow of the optimal wind turbine is compared with the one without a dimple, a reduction of the blade wake and delay of the flow separation can be identified. Finally, the shed vortices from the optimal wind turbine blade are weaker and decay faster than the ones shed from the wind turbine without a dimple.
format	article
author	Seungwoo Yoo Sahuck Oh
author_facet	Seungwoo Yoo Sahuck Oh
author_sort	Seungwoo Yoo
title	Flow analysis and optimization of a vertical axis wind turbine blade with a dimple
title_short	Flow analysis and optimization of a vertical axis wind turbine blade with a dimple
title_full	Flow analysis and optimization of a vertical axis wind turbine blade with a dimple
title_fullStr	Flow analysis and optimization of a vertical axis wind turbine blade with a dimple
title_full_unstemmed	Flow analysis and optimization of a vertical axis wind turbine blade with a dimple
title_sort	flow analysis and optimization of a vertical axis wind turbine blade with a dimple
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/fb5e8e789d6d4d4396e58e11698e7845
work_keys_str_mv	AT seungwooyoo flowanalysisandoptimizationofaverticalaxiswindturbinebladewithadimple AT sahuckoh flowanalysisandoptimizationofaverticalaxiswindturbinebladewithadimple
_version_	1718444813574995968

Flow analysis and optimization of a vertical axis wind turbine blade with a dimple

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