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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. In: WindEurope Conference and Exhibition 2019 (PO132). WindEurope Conference and Exhibition 2019, 2019-04-02 - 2019-04-04, Bilbao, Spain.

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Official URL: https://windeurope.org/confex2019/


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 large 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, of conventional pressure measurements for the determination of the aerodynamic coefficients, and of 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 is 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 large as 12 million and the angle of attack ranged from -14 deg to +20 deg. The presented methodology is here demonstrated to be mature for industrial testing.

Item URL in elib:https://elib.dlr.de/127529/
Document Type:Conference or Workshop Item (Poster)
Additional Information:Poster Number 132, https://windeurope.org/confex2019/conference/programme/
Title:A Reliable Experimental Methodology for the Study of Wind-Turbine Rotor Blade Aerodynamics
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Costantini, MarcoUNSPECIFIEDhttps://orcid.org/0000-0003-0642-0199134173779
Klein, ChristianUNSPECIFIEDhttps://orcid.org/0000-0001-7592-6922138941200
Date:May 2019
Journal or Publication Title:WindEurope Conference and Exhibition 2019
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Temperature-sensitive paint, Wind Turbine, Transition, Rotor Blade, TSP
Event Title:WindEurope Conference and Exhibition 2019
Event Location:Bilbao, Spain
Event Type:international Conference
Event Start Date:2 April 2019
Event End Date:4 April 2019
Institution:Deutsches Zentrum für Luft- und Raumfahrt e.V.
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 (old)
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 15:40
Last Modified:24 Apr 2024 20:31

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