Investigation of Wake Expansion for Spanwise Arranged Turbines in the Offshore Wind Farm by Large Eddy Simulation

Zhichang Liang, Jingjing Zhang, Xinru Guo and Haixiao Liu ()
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Zhichang Liang: State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
Jingjing Zhang: State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
Xinru Guo: State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China
Haixiao Liu: State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin 300072, China

Energies, 2025, vol. 18, issue 11, 1-24

Abstract: The issue of wind turbine wake effects in the offshore environment has become increasingly important with the development of offshore wind farms. The problem of wake dispersion from turbines plays a crucial role in evaluating the wake velocity deficit and solving the optimization problem of wind farms. This study focuses on the wake expansion of spanwise arranged turbines using Large Eddy Simulation (LES). Firstly, numerical models are compared with the data from previous studies to validate their accuracy. Secondly, the study analyses wake structures for varying lateral spacings in spanwise turbine configurations using the actuator line model (ALM). Lastly, by comparing the predictions of wake expansion between existing models, a modified model considering added turbulence is proposed and then validated using LES data, significantly enhancing accuracy for predicting the wake width under different array spacings in the wind farm.

Keywords: offshore wind farm; wind turbine array; multiple turbine platform; wake expansion; wake interaction; wake model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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