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Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
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https://doi.org/10.5194/wes-2019-23
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-2019-23
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research articles 16 May 2019

Research articles | 16 May 2019

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

On the self-similarity of wind turbine wakes in complex terrain using large-eddy simulation

Arslan Salim Dar1,2, Jacob Berg1, Niels Troldborg1, and Edward G. Patton3 Arslan Salim Dar et al.
  • 1DTU Wind Energy, "Risø campus", Frederiksborgvej 399, 4000 Roskilde, Denmark
  • 2Wind Engineering and Renewable Energy Laboratory (WIRE), École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
  • 3National Center for Atmospheric Research, Boulder, CO, USA

Abstract. We perform large-eddy simulation of flow in complex terrain under neutral atmospheric stratification. We study the self-similar behavior of a turbine wake as a function of varying terrain complexity and perform comparison with a flat terrain. By plotting normalized velocity deficit profiles in different complex terrain cases, we verify that self-similarity is preserved as we move downstream from the turbine. We find that this preservation is valid for a shorter distance downstream compared to what is observed in flat terrain. A larger spread of the profiles toward the tails due to varying levels of shear is also observed.

Arslan Salim Dar et al.
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Arslan Salim Dar et al.
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