CFD-Based In-Depth Investigation of the Effects of the Shape and Layout of a Vortex Generator on the Aerodynamic Performance of a Multi-MW Wind Turbine

Thick airfoils are conventionally adopted in the blade root region of a wind turbine to ensure structural safety under extreme conditions, despite the resulting power loss. To prevent this loss, a passive flow control device known as a vortex generator (VG) is installed at the starting point of the...

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Autores principales:	Hyeon-Gi Moon, Sunho Park, Kwangtae Ha, Jae-Ho Jeong
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	vortex generator computational fluid dynamics wind turbine blade stall Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/f01b36a67ad5494abde511635e8d279a
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spelling	oai:doaj.org-article:f01b36a67ad5494abde511635e8d279a2021-11-25T16:37:35ZCFD-Based In-Depth Investigation of the Effects of the Shape and Layout of a Vortex Generator on the Aerodynamic Performance of a Multi-MW Wind Turbine10.3390/app1122107642076-3417https://doaj.org/article/f01b36a67ad5494abde511635e8d279a2021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/22/10764https://doaj.org/toc/2076-3417Thick airfoils are conventionally adopted in the blade root region of a wind turbine to ensure structural safety under extreme conditions, despite the resulting power loss. To prevent this loss, a passive flow control device known as a vortex generator (VG) is installed at the starting point of the stall to control the flow field near the wall of the suction surface. In this study, we used computational fluid dynamics (CFD) to investigate the aerodynamic characteristics induced as a result of the shape and layout of the VG on a multi-MW wind turbine blade. The separated and vortical flow behavior on the suction surface of the wind turbine blade equipped with VGs was captured by the Reynolds-averaged Navier–Stokes (RANS) steady-flow simulation. The parametric sensitivity study of the VG shape parameters such as the chord-wise length, height, and interval of the fair of VGs was conducted using thick DU airfoil on the blade inboard area. Based on these results, the response surface method (RSM) was used to investigate the influence of the design parameters of the VG. Based on the CFD results, the VG design parameters were selected by considering the lift coefficient and vorticity above the trailing edge. The maximum vorticity from the trailing edge of the selected VG and the lift coefficient were 55.7% and 0.42% higher, respectively, than the average. The selected VG design and layout were adopted for a multi-MW wind turbine and reduced stall occurrence in the blade root area, as predicted by the simulation results. The VG improved the aerodynamic performance of the multi-MW wind turbine by 2.8% at the rated wind speed.Hyeon-Gi MoonSunho ParkKwangtae HaJae-Ho JeongMDPI AGarticlevortex generatorcomputational fluid dynamicswind turbine bladestallTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10764, p 10764 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	vortex generator computational fluid dynamics wind turbine blade stall Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	vortex generator computational fluid dynamics wind turbine blade stall Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Hyeon-Gi Moon Sunho Park Kwangtae Ha Jae-Ho Jeong CFD-Based In-Depth Investigation of the Effects of the Shape and Layout of a Vortex Generator on the Aerodynamic Performance of a Multi-MW Wind Turbine
description	Thick airfoils are conventionally adopted in the blade root region of a wind turbine to ensure structural safety under extreme conditions, despite the resulting power loss. To prevent this loss, a passive flow control device known as a vortex generator (VG) is installed at the starting point of the stall to control the flow field near the wall of the suction surface. In this study, we used computational fluid dynamics (CFD) to investigate the aerodynamic characteristics induced as a result of the shape and layout of the VG on a multi-MW wind turbine blade. The separated and vortical flow behavior on the suction surface of the wind turbine blade equipped with VGs was captured by the Reynolds-averaged Navier–Stokes (RANS) steady-flow simulation. The parametric sensitivity study of the VG shape parameters such as the chord-wise length, height, and interval of the fair of VGs was conducted using thick DU airfoil on the blade inboard area. Based on these results, the response surface method (RSM) was used to investigate the influence of the design parameters of the VG. Based on the CFD results, the VG design parameters were selected by considering the lift coefficient and vorticity above the trailing edge. The maximum vorticity from the trailing edge of the selected VG and the lift coefficient were 55.7% and 0.42% higher, respectively, than the average. The selected VG design and layout were adopted for a multi-MW wind turbine and reduced stall occurrence in the blade root area, as predicted by the simulation results. The VG improved the aerodynamic performance of the multi-MW wind turbine by 2.8% at the rated wind speed.
format	article
author	Hyeon-Gi Moon Sunho Park Kwangtae Ha Jae-Ho Jeong
author_facet	Hyeon-Gi Moon Sunho Park Kwangtae Ha Jae-Ho Jeong
author_sort	Hyeon-Gi Moon
title	CFD-Based In-Depth Investigation of the Effects of the Shape and Layout of a Vortex Generator on the Aerodynamic Performance of a Multi-MW Wind Turbine
title_short	CFD-Based In-Depth Investigation of the Effects of the Shape and Layout of a Vortex Generator on the Aerodynamic Performance of a Multi-MW Wind Turbine
title_full	CFD-Based In-Depth Investigation of the Effects of the Shape and Layout of a Vortex Generator on the Aerodynamic Performance of a Multi-MW Wind Turbine
title_fullStr	CFD-Based In-Depth Investigation of the Effects of the Shape and Layout of a Vortex Generator on the Aerodynamic Performance of a Multi-MW Wind Turbine
title_full_unstemmed	CFD-Based In-Depth Investigation of the Effects of the Shape and Layout of a Vortex Generator on the Aerodynamic Performance of a Multi-MW Wind Turbine
title_sort	cfd-based in-depth investigation of the effects of the shape and layout of a vortex generator on the aerodynamic performance of a multi-mw wind turbine
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f01b36a67ad5494abde511635e8d279a
work_keys_str_mv	AT hyeongimoon cfdbasedindepthinvestigationoftheeffectsoftheshapeandlayoutofavortexgeneratorontheaerodynamicperformanceofamultimwwindturbine AT sunhopark cfdbasedindepthinvestigationoftheeffectsoftheshapeandlayoutofavortexgeneratorontheaerodynamicperformanceofamultimwwindturbine AT kwangtaeha cfdbasedindepthinvestigationoftheeffectsoftheshapeandlayoutofavortexgeneratorontheaerodynamicperformanceofamultimwwindturbine AT jaehojeong cfdbasedindepthinvestigationoftheeffectsoftheshapeandlayoutofavortexgeneratorontheaerodynamicperformanceofamultimwwindturbine
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CFD-Based In-Depth Investigation of the Effects of the Shape and Layout of a Vortex Generator on the Aerodynamic Performance of a Multi-MW Wind Turbine

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