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Coupled response analysis of an offshore articulated wind turbine under different environmental loads
Citation Link: https://doi.org/10.15480/882.3308
Publikationstyp
Conference Paper
Date Issued
2019-09
Sprache
English
Author(s)
Herausgeber*innen
TORE-DOI
TORE-URI
Article Number
3
Citation
11th International Workshop on Ship and Marine Hydrodynamics (IWSH2019), Paper 3
Contribution to Conference
In this paper, an offshore articulated wind turbine structure is proposed for the water depth of 70 meters. Considering the influence of different environmental factors, the dynamic responses of the structure are studied. Three dimensional potential flow theory was used to calculate the hydrodynamic characteristics of the structure, and the blade element momentum theory was used to calculate the aerodynamic load, the influence of foundation motion, wave surface elevation and friction damping of articulated joint were certainly considered. The control equation in the time domain is set up and the motion response is solved. It is shown that the aerodynamic load has great influence on the average response amplitude, including the average pitch angle, the rotor thrust and the tension of articulated joint. while the wave load is related to the variation of amplitude. The structure will produce a large coupling low-frequency response in the low-frequency range with wave and wind. Especially, under the action of turbulent wind, the coupling effect increases sharply.
Subjects
Offshore articulated wind turbine
Blade element momentum theory
Aerodynamic load
Coupling effect
DDC Class
600: Technik
620: Ingenieurwissenschaften
More Funding Information
Nation Natural Science Foundation of China
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