Numerical modelling of dynamic responses of a floating offshore wind turbine subject to focused waves

Yang Zhou, Qing Xiao, Yuanchuan Liu, Atilla Incecik, Christophe Peyrard, Sunwei Li, Guang Pan

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Abstract

In this paper, we present numerical modelling for the investigation of dynamic responses of a floating offshore wind turbine subject to focused waves. The modelling was carried out using a Computational Fluid Dynamics (CFD) tool. We started with the generation of a focused wave in a numerical wave tank based on a first-order irregular wave theory, then validated the developed numerical method for wave-structure interaction via a study of floating production storage and offloading (FPSO) to focused wave. Subsequently, we investigated the wave-/wind-structure interaction of a fixed semi-submersible platform, a floating semi-submersible platform and a parked National Renewable Energy Laboratory (NREL) 5 MW floating offshore wind turbine. To understand the nonlinear effect, which usually occurs under severe sea states, we carried out a systematic study of the motion responses, hydrodynamic and mooring tension loads of floating offshore wind turbine (FOWT) over a range of wave steepness, and compared the results obtained from two potential flow theory tools with each other, i.e., Électricité de France (EDF) in-house code and NREL Fatigue, Aerodynamics, Structures, and Turbulence (FAST). We found that the nonlinearity of the hydrodynamic loading and motion responses increase with wave steepness, revealed by higher-order frequency response, leading to the appearance of discrepancies among different tools.

Original languageEnglish
Article number3482
Number of pages30
JournalEnergies
Volume12
Issue number18
DOIs
Publication statusPublished - 9 Sep 2019

Fingerprint

Offshore wind turbines
Wind Turbine
Numerical Modeling
Dynamic Response
Dynamic response
Semisubmersibles
Renewable Energy
Hydrodynamics
Numerical Wave Tank
Motion
Potential Flow
Nonlinear Effects
Frequency Response
Potential flow
Mooring
Computational Fluid Dynamics
Interaction
Aerodynamics
Fatigue
Discrepancy

Keywords

  • floating offshore wind turbine
  • computational fluid dynamics
  • focused wave
  • nonlinear hydrodynamic response

Cite this

Zhou, Yang ; Xiao, Qing ; Liu, Yuanchuan ; Incecik, Atilla ; Peyrard, Christophe ; Li, Sunwei ; Pan, Guang. / Numerical modelling of dynamic responses of a floating offshore wind turbine subject to focused waves. In: Energies. 2019 ; Vol. 12, No. 18.
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abstract = "In this paper, we present numerical modelling for the investigation of dynamic responses of a floating offshore wind turbine subject to focused waves. The modelling was carried out using a Computational Fluid Dynamics (CFD) tool. We started with the generation of a focused wave in a numerical wave tank based on a first-order irregular wave theory, then validated the developed numerical method for wave-structure interaction via a study of floating production storage and offloading (FPSO) to focused wave. Subsequently, we investigated the wave-/wind-structure interaction of a fixed semi-submersible platform, a floating semi-submersible platform and a parked National Renewable Energy Laboratory (NREL) 5 MW floating offshore wind turbine. To understand the nonlinear effect, which usually occurs under severe sea states, we carried out a systematic study of the motion responses, hydrodynamic and mooring tension loads of floating offshore wind turbine (FOWT) over a range of wave steepness, and compared the results obtained from two potential flow theory tools with each other, i.e., {\'E}lectricit{\'e} de France (EDF) in-house code and NREL Fatigue, Aerodynamics, Structures, and Turbulence (FAST). We found that the nonlinearity of the hydrodynamic loading and motion responses increase with wave steepness, revealed by higher-order frequency response, leading to the appearance of discrepancies among different tools.",
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Numerical modelling of dynamic responses of a floating offshore wind turbine subject to focused waves. / Zhou, Yang; Xiao, Qing; Liu, Yuanchuan; Incecik, Atilla; Peyrard, Christophe ; Li, Sunwei; Pan, Guang.

In: Energies, Vol. 12, No. 18, 3482, 09.09.2019.

Research output: Contribution to journalArticle

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AU - Xiao, Qing

AU - Liu, Yuanchuan

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AU - Li, Sunwei

AU - Pan, Guang

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