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A Reliable Experimental Methodology for the Study of Wind-Turbine Rotor Blade Aerodynamics

Costantini, Marco and Fuchs, Carsten and Henne, Ulrich and Klein, Christian and Ondrus, Vladimir and Bruse, Martin and Löhr, Markus and Jacobs, Markus (2019) A Reliable Experimental Methodology for the Study of Wind-Turbine Rotor Blade Aerodynamics. Journal of Physics: Conference Series, 1222 (012001), pp. 1-10. Institute of Physics (IOP) Publishing. DOI: 10.1088/1742-6596/1222/1/012001 ISSN 1742-6588

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Official URL: https://iopscience.iop.org/article/10.1088/1742-6596/1222/1/012001

Abstract

The aerodynamic performance of airfoils and blades designed for modern wind-turbine rotors, which have diameters of the order of hundred meters, must be examined at chord Reynolds numbers matching those of practical applications. In general, such high Reynolds numbers cannot be achieved in conventional wind tunnels. Moreover, knowledge on the boundary-layer transition location is essential to evaluate airfoil and blade performance at these flow conditions. This work presents an experimental methodology that can be applied at flow conditions reproducing those of real wind-turbine rotor blades and simultaneously provides aerodynamic coefficients and transition locations. The experimental methodology consists of: the Temperature-Sensitive Paint (TSP) technique for global, non-intrusive and reliable transition detection; conventional pressure measurements for the determination of the aerodynamic coefficients; and the High Pressure Wind Tunnel Göttingen (DNW-HDG) to run the experiments at Reynolds numbers matching those of real applications. The obtained results can be used to verify airfoil and blade performance and to validate numerical predictions. In the present work, the experimental methodology was applied to systematically investigate the aerodynamic performance of an airfoil designed for the mid-span sections of modern wind-turbine rotor blades. The examined chord Reynolds numbers were as high as 12 million and the angle-of-attack ranged from -14° to +20°. The presented methodology was here demonstrated to be mature for productive testing.

Item URL in elib:https://elib.dlr.de/127561/
Document Type:Article
Additional Information:Paper No. 012001, doi:10.1088/issn.1742-6596, Online ISSN: 1742-6596
Title:A Reliable Experimental Methodology for the Study of Wind-Turbine Rotor Blade Aerodynamics
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Costantini, Marcomarco.costantini (at) dlr.dehttps://orcid.org/0000-0003-0642-0199
Fuchs, Carstencarsten.fuchs (at) dlr.deUNSPECIFIED
Henne, Ulrichulrich.henne (at) dlr.deUNSPECIFIED
Klein, Christianchristian.klein (at) dlr.dehttps://orcid.org/0000-0001-7592-6922
Ondrus, VladimirVladimir.Ondrus (at) uni-hohenheim.deUNSPECIFIED
Bruse, MartinMartin.Bruse (at) dnw.aeroUNSPECIFIED
Löhr, MarkusMarkus.Loehr (at) dnw.aeroUNSPECIFIED
Jacobs, Markusmarkus.jacobs (at) dnw.aeroUNSPECIFIED
Date:2019
Journal or Publication Title:Journal of Physics: Conference Series
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:No
Volume:1222
DOI :10.1088/1742-6596/1222/1/012001
Page Range:pp. 1-10
Editors:
EditorsEmail
UNSPECIFIEDIOP Publishing
Publisher:Institute of Physics (IOP) Publishing
Series Name:Scientific Proceedings of the WindEurope Conference 2019
ISSN:1742-6588
Status:Published
Keywords:Temperature-sensitive paint, Wind Turbine, Transition, Rotor Blade, TSP
Institution:Deutsches Zentrum für Luft- und Raumfahrt e.V.
Department:AS-EXV
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Experimental Methods, GO
German-Dutch Windtunnels > Business Unit Göttingen und Köln (GUK)
Deposited By: Micknaus, Ilka
Deposited On:25 Jun 2019 16:05
Last Modified:25 Jun 2019 16:05

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