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IndiAna Wind - Development of powerful and quiet airfoils with high relative thickness



In the course of increasing efficiency of today’s energy production, the rotor diameters of modern wind turbines become increasingly larger. In order to reduce the accompanied higher mass and costs, very thick airfoils are chosen for the inner rotor segment. In some cases, so-called flatback airfoils with a blunt trailing edge are used.

Skalenauflösende Simulation des Schallfeldes
Sound field of a scale-resolving simulation for a 35% wind turbine airfoil; ©DLR

The project IndiAnaWind is funded by the Federal Ministry of Economic Affairs and Energy (BMWi). Within the project the scientists of the DLR-Institute of Aerodynamics and Flow Technology develop airfoils with high relative thickness, which stand out due to high aerodynamic efficiency and low aeroacoustic emission. Furthermore, the aerodynamic performance of existing thick airfoils is improved by appropriate design features. During the project, the scientists expand their numerical simulation and design capabilities for the aerodynamics and noise generation of thick airfoils. High-quality, scale-resolved simulation tools are used to gain a deeper understanding of the underlying fluid physics. The aerodynamics and aeroacustics of the airfoils designed by DLR will be investigated subsequently in the DNW-NWB wind tunnel. The results are used both to verify the DLR design and as a basis for further improvement of the calculation methods.

 

Name IndiAnaWind - Interdisziplinäre Analyse und Optimierung von Windenergieanlagen und ihren Komponenten
Term 09/2019 - 07/2022
Partners DLR-Institute of Aerodynamics and Flow Technology
  Wobben Research & Development (WRD) GmbH (Project Leader)
  Institute of Aerodynamics and Gas Dynamics (IAG) - University of Stuttgart
  Institute of Meterology and Climatology (IMUK) - Leibniz University Hannover
  Chair of Scientific Computing (SciComp) - Universität Kaiserslautern
  CFD Software Entwicklungs- und Forschungsgesellschaft mbH (CFDB)
Funding   Federal Ministry of Economic Affairs and Energy (BMWi), ref. no. 0325719H

 


Contact
Gerrit Heilers
German Aerospace Center

Institute of Aerodynamics and Flow Technology
, Helicopters
Braunschweig

Tel.: +49 531 295 2178

Fax: +49 531 295-2320

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