OC6 Phase I: Investigating the underprediction of low-frequency hydrodynamic loads and responses of a floating wind turbine

Enthalten in
Journal of physics. Conference Series 
Volume
1618
Issue
3
Article Number
032033
Citation
Journal of Physics: Conference Series 1618 (3): 032033 (2020)
Contribution to Conference
Science of Making Torque from Wind 2020, TORQUE 2020 
Publisher DOI
10.1088/1742-6596/1618/3/032033
Scopus ID
2-s2.0-85092368116
Publisher
IOP Publ.
Phase I of the OC6 project is focused on examining why offshore wind design tools underpredict the response (loads/motion) of the OC5-DeepCwind semisubmersible at its surge and pitch natural frequencies. Previous investigations showed that the underprediction was primarily related to nonlinear hydrodynamic loading, so two new validation campaigns were performed to separately examine the different hydrodynamic load components. In this paper, we validate a variety of tools against this new test data, focusing on the ability to accurately model the low-frequency loads on a semisubmersible floater when held fixed under wave excitation and when forced to oscillate in the surge direction. However, it is observed that models providing better load predictions in these two scenarios do not necessarily produce a more accurate motion response in a moored configuration.
DDC Class
600: Technik
Publication version
submittedVersion
Lizenz
https://creativecommons.org/licenses/by/3.0/
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