Discussion papers | Copyright
https://doi.org/10.5194/wes-2018-45
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Research articles 26 Jun 2018

Research articles | 26 Jun 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Wind Energy Science (WES).

A Large-Eddy Simulation Approach for Wind Turbine Wakes and its Verification with Wind Tunnel Measurements

Jiangang Wang, Chengyu Wang, Filippo Campagnolo, and Carlo L. Bottasso Jiangang Wang et al.
  • Wind Energy Institute, Technische Universität München, Garching bei München, Germany

Abstract. This paper first describes a large-eddy simulation approach, and then verifies it with respect to single-turbine wind tunnel experiments. Various aspects of the numerical approach are considered, to try to reduce its need for tuning, improve its accuracy and limit its computational cost. Simulation results are compared to measurements, including rotor and wake quantities. The study includes normal operating conditions, as well as wake manipulation by derating, yaw misalignment and cyclic pitching of the blades. Results indicate a good overall matching of simulations with experiments. Low turbulence test cases appear to be more challenging than moderate and high turbulence ones, due to the need for denser grids to limit numerical diffusion and accurately resolve tip-shed vortices in the near wake region.

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Jiangang Wang et al.
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Short summary
This paper describes a LES approach for the simulation of wind turbines and their wakes. The simulation model is used for developing a complete digital copy of experiments performed with scaled wind turbines in a boundary layer wind tunnel, including the passive generation of a sheared turbulent flow. Numerical results are compared with experimental measurements, with a good overall matching between the two.
This paper describes a LES approach for the simulation of wind turbines and their wakes. The...
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