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Lookup NU author(s): Professor Zhiqiang HuORCiD
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© 2026 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.Floating offshore wind turbines (FOWTs) have a prosperous potential in the development of offshore wind industry. However, large-scale blades rotation and platform motion can induce significant coupling variations in inflow and wake dynamics. To account for the coupled effects of platform motion, near-wake evolution, and structural elasticity, an in-house fully coupled free-wake vortex model for FOWTs was employed in this paper. Load characteristics of a 15 MW semi-submersible FOWT under typical South China Sea conditions were analyzed. Comparisons were made with the analysis results from software FAST. It was found that for the yaw misalignment situation with wind speed under 9 m/s, there is a maximal 15.5% difference in the tower-base fore-aft moments which might because by alteration of the azimuthal load distributions due to yaw misalignment. Moreover, the tower wake effect can reduce load discrepancies at specific azimuthal positions. Under joint turbulent wind and irregular wave conditions, FAST showed a bigger estimation of tower-base fatigue loads under low-speed conditions (the maximum error of 31.2%). Further analysis indicates that the discrepancies might be attributable to BEM's overestimation of the axial induction factor, which stems from the differences in angle of attack induced by coupling effects.
Author(s): Wang Z, Lin C, Wang S, Yuan Y, Zhang H, Zhou B, Hu Z, Chen Y
Publication type: Article
Publication status: Published
Journal: Ocean Engineering
Year: 2026
Volume: 358
Issue: Part 2
Online publication date: 02/05/2026
Acceptance date: 27/04/2026
ISSN (print): 0029-8018
ISSN (electronic): 1873-5258
Publisher: Elsevier Ltd
URL: https://doi.org/10.1016/j.oceaneng.2026.125823
DOI: 10.1016/j.oceaneng.2026.125823
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