City Research Online

Study on the aerodynamic damping for the seismic analysis of wind turbines in operation

Meng, J., Dai, K., Zhao, Z. , Mao, Z., Camara, A. ORCID: 0000-0002-1675-2640, Zhang, S. & Mei, Z. (2020). Study on the aerodynamic damping for the seismic analysis of wind turbines in operation. Renewable Energy, doi: 10.1016/j.renene.2020.05.181


The continuous cost reduction of wind turbines has consolidated the competitiveness of wind energy. With the increasing installation of wind turbines in seismic-prone regions, it is likely that earthquakes will strike farms in operation. A practical approach to predict the dynamic behavior of a wind turbine under simultaneous seismic and operational wind loads is investigated in this work. The combined action can be determined by analyzing the wind and the seismic-induced responses separately. However, an accurate definition of the aerodynamic damping is required for this purpose and there are few experimental studies on the additional damping source. A 1/100-scaled wind turbine model was designed and the aerodynamic damping of the model was identified. Subsequently, the ground motion was applied in the model by means of a shake table and the combined wind/earthquake response that was measured experimentally was compared with the response predicted by several combination rules. A numerical study using the FAST analysis package for wind turbines was also conducted to complement the experiments with fully-coupled simulations that include aeroelastic effects. This work provides a necessary experimental reference for structural engineers to use adequate aerodynamic damping and load combination methods for the seismic analysis of wind turbines in operation.

Publication Type: Article
Additional Information: © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
Publisher Keywords: Wind turbine model, Experimental study, Aerodynamic damping, Wind-seismic interaction
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
T Technology > TJ Mechanical engineering and machinery
T Technology > TK Electrical engineering. Electronics Nuclear engineering
T Technology > TL Motor vehicles. Aeronautics. Astronautics
Departments: School of Science & Technology > Engineering > Civil Engineering
Text - Accepted Version
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (6MB) | Preview



Downloads per month over past year

View more statistics

Actions (login required)

Admin Login Admin Login