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H. Kim, M. Shokati, S. Lee, "Wake Structures in Yawed Turbines: An LES Perspective", in P. Iványi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Eighteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 10, Paper 9.3, 2025,

Keywords: NREL 5 MW turbine, wind turbine wake, large-eddy simulation, actuator disk model, wake dynamics, wake redirection, yaw control.

Abstract

Yaw-based wake steering has emerged as a promising approach for enhancing wind farm performance by redirecting turbine wakes. Despite its potential, the detailed dynamics and evolution of the curled wake structure resulting from rotor yaw remain insufficiently characterized. This study investigates the wake behavior behind a wind turbine subjected to a range of yaw angles under uniform inflow conditions, utilizing large-eddy simulation (LES) to capture the flow features. The NREL 5MW reference wind turbine is represented using a rotating actuator disk model to resolve the deformation process of the curled wake. Results indicate that the vertical asymmetry in the wake is primarily driven by the interaction between the global rotation of the wake and a pair of counter-rotating vortices induced by the yawed rotor. The yaw angle significantly alters the shape and path of the wake, although these effects progressively diminish with increasing downstream distance.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 10 PROCEEDINGS OF THE EIGHTEENTH INTERNATIONAL CONFERENCE ON CIVIL, STRUCTURAL AND ENVIRONMENTAL ENGINEERING COMPUTING Edited by: P. Iványi, J. Kruis and B.H.V. Topping Paper 9.3 Wake Structures in Yawed Turbines: An LES Perspective H. Kim, M. Shokati and S. Lee Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea Full Bibliographic Reference for this paper H. Kim, M. Shokati, S. Lee, "Wake Structures in Yawed Turbines: An LES Perspective", in P. Iványi, J. Kruis, B.H.V. Topping, (Editors), "Proceedings of the Eighteenth International Conference on Civil, Structural and Environmental Engineering Computing", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 10, Paper 9.3, 2025, Keywords: NREL 5 MW turbine, wind turbine wake, large-eddy simulation, actuator disk model, wake dynamics, wake redirection, yaw control. Abstract Yaw-based wake steering has emerged as a promising approach for enhancing wind farm performance by redirecting turbine wakes. Despite its potential, the detailed dynamics and evolution of the curled wake structure resulting from rotor yaw remain insufficiently characterized. This study investigates the wake behavior behind a wind turbine subjected to a range of yaw angles under uniform inflow conditions, utilizing large-eddy simulation (LES) to capture the flow features. The NREL 5MW reference wind turbine is represented using a rotating actuator disk model to resolve the deformation process of the curled wake. Results indicate that the vertical asymmetry in the wake is primarily driven by the interaction between the global rotation of the wake and a pair of counter-rotating vortices induced by the yawed rotor. The yaw angle significantly alters the shape and path of the wake, although these effects progressively diminish with increasing downstream distance. download the full-text of this paper (PDF, 2294 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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