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Lookup NU author(s): Professor Zhiqiang HuORCiD
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© 2025In large-scale offshore wind farm, power loss and fatigue increase caused by wake effect present considerable and inevitable challenges. Wake deflection through yawed turbine adjustments offers an effective approach to mitigating the negative impacts of turbine wakes. For floating offshore wind turbines (FOWTs), which have six degrees of freedom (DOF) in movement, wake interactions are even more complex. The actuator line method (ALM) effectively captures these interactions, with platform motion disturbances further accelerating wake recovery within FOWT arrays. This study employs ALM coupled with Reynolds-Averaged Navier-Stokes (RANS) simulations to simulate the FOWT wakes and uses modal decomposition techniques to investigate wake evolution. This paper focuses on the wake interaction between two tandem FOWTs in surge motion, results indicate that the wind speed fluctuations in the near-wake of the downstream FOWT are weaker compared to the upstream FOWT, which is a consequence of interactions between the upstream turbine's vortex ring structure and the downstream turbine. Additionally, the wake interactions in different yaw conditions are analyzed, when the yaw angles of the upstream FOWT are set to 10°, 20°, and 30°, total power generation for tandem turbines increases by 4 %, 1.6 %, and 0.8 %, respectively. This paper deepens the understanding of wake interaction of FOWTs and wake impacts under yaw conditions and contributes to the study of floating wind farm flow field.
Author(s): Wang T, Cai C, Gao X, Sun X, Guo N, Hu Z, Zheng J, Wang D, Peng C, Li Q
Publication type: Article
Publication status: Published
Journal: Energy
Year: 2025
Volume: 337
Print publication date: 15/11/2025
Online publication date: 20/09/2025
Acceptance date: 11/09/2025
ISSN (print): 0360-5442
ISSN (electronic): 1873-6785
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.energy.2025.138486
DOI: 10.1016/j.energy.2025.138486
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