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  4. The impact of unsteadiness on the aerodynamic loads of a floating offshore wind turbine
 
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The impact of unsteadiness on the aerodynamic loads of a floating offshore wind turbine

Citation Link: https://doi.org/10.15480/882.9006
Publikationstyp
Conference Paper
Date Issued
2023
Sprache
English
Author(s)
Schulz, Christian  orcid-logo
Fluiddynamik und Schiffstheorie M-8  
Özinan, Umut
Netzband, Stefan  
Fluiddynamik und Schiffstheorie M-8  
Cheng, Po Wen  
Abdel-Maksoud, Moustafa  orcid-logo
Fluiddynamik und Schiffstheorie M-8  
TORE-DOI
10.15480/882.9006
TORE-URI
https://hdl.handle.net/11420/44855
Journal
Journal of physics. Conference Series  
Volume
2626
Issue
1
Article Number
012064
Citation
Journal of Physics: Conference Series 2626: 012064 (2023-11-06)
Contribution to Conference
20th Deep Sea Offshore Wind R and D Conference, DeepWind 2023  
Publisher DOI
10.1088/1742-6596/2626/1/012064
Scopus ID
2-s2.0-85179551038
Publisher
IOP Publ.
The role of unsteadiness in the aerodynamics of Floating Offshore Wind Turbines (FOWT) remains a subject of discussion among the research community. Therefore, it must be investigated whether and to what extent transient aerodynamic phenomena impact the loads of a wind turbine rotor undergoing motions in unsteady winds. The study of transient aerodynamic phenomena is closely linked to the question of whether the modern Blade Element Momentum Theory (BEMT) methods can be considered reliable for the simulation of FOWTs. In this work, investigations are carried out to identify the relevant transient aerodynamic phenomena and quantify their effects on the torque and thrust of the Floatgen wind turbine. A free-wake panel method is utilised to identify and quantify transient parts of the load response to a set of simplified unsteady scenarios: a wind gust, a harmonic surge motion and a rotor speed oscillation. Transient contributions to the load behaviour of the wind turbine can be identified in all scenarios under consideration. In addition, the ability of a state-of-the-art BEMT method to model the identified transient contributions is evaluated. While an agreement of the qualitative impact of the transient aerodynamic phenomena at moderate motion frequencies is found, a contradicting behaviour of the simulation models becomes apparent at high motion frequencies. This indicates the presence of a transient, three-dimensional wake effect that cannot be reproduced by the common unsteady corrections for BEMT methods.
DDC Class
530: Physics
Funding(s)
Validierung, Messung und Optimierung von schwimmenden Windenergiesystemen; Teilvorhaben: Erweiterung und Validierung einer Panelmethode zur Simulation des dynamischen Betriebsverhaltens schwimmender Windenergiesysteme  
Publication version
publishedVersion
Lizenz
https://creativecommons.org/licenses/by/3.0/
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Schulz_2023_J._Phys. _Conf._Ser._2626_012064.pdf

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