Fluid-structure interaction simulation of dynamic response and wake of floating offshore wind turbine considering tower shadow effect

• Published in: Acta mechanica Sinica Vol. 40; no. 8
• Main Authors: Liu, Songyang, Xin, Zhiqiang, Wang, Lei, Cai, Zhiming
• Format: Journal Article
• Language: English
• Published: Beijing The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences 01-08-2024; Springer Nature B.V
• Edition: English ed.
• Subjects: Atmospheric boundary layer; Classical and Continuum Physics; Computational fluid dynamics; Computational Intelligence; Dynamic response; Engineering; Engineering Fluid Dynamics; Floating platforms; Fluid flow; Fluid-structure interaction; Offshore; Random waves; Research Paper; Shadows; Simulation; Theoretical and Applied Mechanics; Turbulent wind; Wind effects; Wind power; Wind turbines; Floating offshore wind turbine; JONSWAP wave; Tower shadow effect; Atmospheric boundary layer inflow; Wind turbine wake
• ISSN: 0567-7718; 1614-3116
• DOI: 10.1007/s10409-024-23567-x

The comprehensive numerical simulation of the tower shadow effect on floating offshore wind turbines (FOWTs), an area less explored compared to fixed-bottom wind turbines, is presented in this study. The atmospheric boundary layer inflow and the joint north sea wave project random wave are used as the operating conditions for FOWT. The combination of computational fluid dynamics (CFD) software simulator for wind farm applications and turbine simulation tool OpenFAST is used to implement fluid-structure interaction calculations. The output power, platform motion, wake velocity deficit and vortex structures are analyzed to reveal the influence of the tower shadow effect on the FOWT. The results indicate that due to the fluctuation caused by the turbulent wind and the floating platform motion, the tower shadow effect of FOWT is less significant for its periodic power decay than that of fixed-bottom wind turbines. And according to the velocity deficit analysis, the influence area of the tower shadow effect on the wake is mainly in the near wake region.