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OC6 Phase Ia: CFD Simulations of the Free-Decay Motion of the DeepCwind Semisubmersible

Wang, Lu ; Robertson, Amy ; Jonkman, Jason ; Kim, Jang ; Shen, Zhi-Rong ; Koop, Arjen ; Borràs Nadal, Adrià ; Shi, Wei ; Zeng, Xinmeng ; Ransley, Edward ; Brown, Scott ; Hann, Martyn ; Chandramouli, Pranav ; Viré, Axelle ; Ramesh Reddy, Likhitha ; Li, Xiang ; Xiao, Qing ; Méndez López, Beatriz ; Campaña Alonso, Guillén ; Oh, Sho ; Sarlak, Hamid ; Netzband, Stefan ; Jang, Hyunchul ; Yu, Kai

Energies (Basel), 2022-01, Vol.15 (1), p.389 [Periódico revisado por pares]

Basel: MDPI AG

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Título:
OC6 Phase Ia: CFD Simulations of the Free-Decay Motion of the DeepCwind Semisubmersible
Autor: Wang, Lu ; Robertson, Amy ; Jonkman, Jason ; Kim, Jang ; Shen, Zhi-Rong ; Koop, Arjen ; Borràs Nadal, Adrià ; Shi, Wei ; Zeng, Xinmeng ; Ransley, Edward ; Brown, Scott ; Hann, Martyn ; Chandramouli, Pranav ; Viré, Axelle ; Ramesh Reddy, Likhitha ; Li, Xiang ; Xiao, Qing ; Méndez López, Beatriz ; Campaña Alonso, Guillén ; Oh, Sho ; Sarlak, Hamid ; Netzband, Stefan ; Jang, Hyunchul ; Yu, Kai
Assuntos: Agreements ; Alternative energy ; CFD ; Coefficients ; Collaboration ; Computational fluid dynamics ; Computer applications ; Cost reduction ; Damping ratio ; Decay ; Design optimization ; Engineering ; Environmental Engineering ; Environmental Sciences ; Experiments ; Fluid dynamics ; free decay ; Hydrodynamic damping ; Hydrodynamics ; Mathematical models ; Offshore operations ; offshore wind ; Radiation ; Renewable resources ; Sciences of the Universe ; semisubmersible ; Simulation ; Turbines ; Turbulence models ; Uncertainty ; validation ; Wind ; Wind power
É parte de: Energies (Basel), 2022-01, Vol.15 (1), p.389
Notas: AC36-08GO28308
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Descrição: Currently, the design of floating offshore wind systems is primarily based on mid-fidelity models with empirical drag forces. The tuning of the model coefficients requires data from either experiments or high-fidelity simulations. As part of the OC6 (Offshore Code Comparison Collaboration, Continued, with Correlation, and unCertainty (OC6) is a project under the International Energy Agency Wind Task 30 framework) project, the present investigation explores the latter option. A verification and validation study of computational fluid dynamics (CFD) models of the DeepCwind semisubmersible undergoing free-decay motion is performed. Several institutions provided CFD results for validation against the OC6 experimental campaign. The objective is to evaluate whether the CFD setups of the participants can provide valid estimates of the hydrodynamic damping coefficients needed by mid-fidelity models. The linear and quadratic damping coefficients and the equivalent damping ratio are chosen as metrics for validation. Large numerical uncertainties are estimated for the linear and quadratic damping coefficients; however, the equivalent damping ratios are more consistently predicted with lower uncertainty. Some difference is observed between the experimental and CFD surge-decay motion, which is caused by mechanical damping not considered in the simulations that likely originated from the mooring setup, including a Coulomb-friction-type force. Overall, the simulations and the experiment show reasonable agreement, thus demonstrating the feasibility of using CFD simulations to tune mid-fidelity models.
Editor: Basel: MDPI AG
Idioma: Inglês

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OC6 Phase Ia: CFD Simulations of the Free-Decay Motion of the DeepCwind Semisubmersible

Basel: MDPI AG

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