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Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
https://doi.org/10.5194/wes-2017-42
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research articles
09 Oct 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Wind Energy Science (WES).
About the suitability of different numerical methods to reproduce model wind turbine measurements in a wind tunnel with high blockage ratio
Annette Claudia Klein1, Sirko Bartholomay2, David Marten2, Thorsten Lutz1, George Pechlivanoglou2, Christian Navid Nayeri2, Christian Oliver Paschereit2, and Ewald Krämer1 1University of Stuttgart, Institute of Aerodynamics and Gas Dynamics, Pfaffenwaldring 21, 70569 Stuttgart, Germany
2TU Berlin, Chair of Fluid Dynamics, Müller-Breslau-Straße 8,10623 Berlin, Germany
Abstract. Numerical and experimental investigations of a model wind turbine with a diameter of 3.0 m are described in the present paper. The objectives of the study are the provision of validation data, the comparison and evaluation of methods of different fidelity and the assessment of the influence of the wind tunnel walls by comparison of measurements to simulations with and without wind tunnel walls. The experiments were carried out in the large wind tunnel of the TU Berlin. With the Lifting Line Free Vortex Wake (LLFVW) code QBlade, the turbine was simulated under far field conditions at the TU Berlin. URANS simulations were performed at the University of Stuttgart with the CFD code FLOWer for far field condition to draw a comparison to QBlade. Moreover, CFD simulations of the turbine in a wind tunnel were carried out, as the walls have a significant influence on the turbine performance.

Comparisons between experiment, the LLFVW code and CFD include on-blade velocities, angle of attack and bending moments. Comparisons of flow fields are drawn between experiment and the CFD code.

A good accordance was achieved for the flow fields, the on-blade velocity and the angle of attack, whereas deviations occur for the bending moments.


Citation: Klein, A. C., Bartholomay, S., Marten, D., Lutz, T., Pechlivanoglou, G., Nayeri, C. N., Paschereit, C. O., and Krämer, E.: About the suitability of different numerical methods to reproduce model wind turbine measurements in a wind tunnel with high blockage ratio, Wind Energ. Sci. Discuss., https://doi.org/10.5194/wes-2017-42, in review, 2017.
Annette Claudia Klein et al.
Annette Claudia Klein et al.
Annette Claudia Klein et al.

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The paper describes the experimental and numerical investigation of a model wind turbine with a diameter of 3.0 m in a narrow wind tunnel. The objectives of the study are the provision of validation data, the comparison and evaluation of methods of different fidelity and the assessment of the influence of the wind tunnel walls. It turned out, that the accordance between the experimental and numerical results is good, but the wind tunnel walls have to be taken into account for the present setup.
The paper describes the experimental and numerical investigation of a model wind turbine with a...
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