TY - GEN
T1 - A Numerical Method for Structural Dynamic Analysis of Fixed Offshore Wind Turbines Considering Multi-Field Interaction
AU - Ma, Qianling
AU - Lyu, Pin
AU - Li, Tao
AU - Wang, Hu
AU - Ma, Ruixian
AU - Liao, Mingfu
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
PY - 2025
Y1 - 2025
N2 - With the development trends of large-scale and deep sea for offshore wind turbines, the structures (i.e. blades, tower and foundation) become more flexible increasingly, meanwhile, the wind loadand hydrodynamic loadare stronger. As a consequence, it is necessary to take the effect of multi-filed interaction on the structural dynamics into account when evaluating safety of the wind turbine, which may involve several nonlinear impacts such as the wake influence and the nonlinear deformation of the blade. In this paper, a numerical approach that considers the interactions among wind, structure, and offshore waves is proposed. A nonlinear beam model of the blade is established based on precise geometric beam theory. An unsteady aerodynamic model of the blade is constructed using a combination of nonlinear lift-line theory and free wake vortex methods. A nonlinear aeroelastic model of the wind turbine is developed using a partitioned weak coupling approach. The tower and monopile foundation models are modeled using the Timoshenko beam theory, and hydrodynamic force acted on the foundation is calculated by the Morison method. The proposed models are applied to the DTU 10 MW turbine. The natural frequencies, modes of the blade, tower, and the entire turbine unit, as well as the dynamic responses under uniform inflow and shear wind conditions are analyzed. The results are compared with the OpenFAST software. Good agreement demonstrates the accuracy of the proposed structural dynamics simulation method for large-scale offshore wind turbines.
AB - With the development trends of large-scale and deep sea for offshore wind turbines, the structures (i.e. blades, tower and foundation) become more flexible increasingly, meanwhile, the wind loadand hydrodynamic loadare stronger. As a consequence, it is necessary to take the effect of multi-filed interaction on the structural dynamics into account when evaluating safety of the wind turbine, which may involve several nonlinear impacts such as the wake influence and the nonlinear deformation of the blade. In this paper, a numerical approach that considers the interactions among wind, structure, and offshore waves is proposed. A nonlinear beam model of the blade is established based on precise geometric beam theory. An unsteady aerodynamic model of the blade is constructed using a combination of nonlinear lift-line theory and free wake vortex methods. A nonlinear aeroelastic model of the wind turbine is developed using a partitioned weak coupling approach. The tower and monopile foundation models are modeled using the Timoshenko beam theory, and hydrodynamic force acted on the foundation is calculated by the Morison method. The proposed models are applied to the DTU 10 MW turbine. The natural frequencies, modes of the blade, tower, and the entire turbine unit, as well as the dynamic responses under uniform inflow and shear wind conditions are analyzed. The results are compared with the OpenFAST software. Good agreement demonstrates the accuracy of the proposed structural dynamics simulation method for large-scale offshore wind turbines.
KW - Geometric Nonlinearity; Structural Dynamics
KW - Multi-Field Interaction
KW - Offshore Wind Turbine
UR - http://www.scopus.com/inward/record.url?scp=105004793544&partnerID=8YFLogxK
U2 - 10.1007/978-981-96-3317-3_18
DO - 10.1007/978-981-96-3317-3_18
M3 - 会议稿件
AN - SCOPUS:105004793544
SN - 9789819633166
T3 - Lecture Notes in Electrical Engineering
SP - 270
EP - 290
BT - Advances in Applied Nonlinear Dynamics, Vibration, and Control – 2024 - The Proceedings of 2024 International Conference on Applied Nonlinear Dynamics, Vibration and Control, ICANDVC 2024
A2 - Jing, Xingjian
A2 - Yang, Dixiong
A2 - Ding, Hu
A2 - Wang, Jiqiang
PB - Springer Science and Business Media Deutschland GmbH
T2 - International Conference on Applied Nonlinear Dynamics, Vibration and Control, ICANDVC 2024
Y2 - 25 October 2024 through 27 October 2024
ER -