CFD Validation of Scaled Floating Offshore Wind Turbine Rotor

Sivalingam, Krishnamoorthi; Davies, Peter; Wala, Abdulqadir Aziz Singapore; Day, Sandy

doi:10.1109/icgea.2018.8356284

Cited by 3 publications

(6 citation statements)

References 4 publications

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“…This paper is an extension and continuation of earlier work presented at the 2018 2nd International Conference on Green Energy and Applications of IEEE (ICGEA) [1]. The insatiable demand for the energy and the rising greenhouse gas emissions is pushing the energy sector towards renewable energy utilization.…”

Section: Introductionmentioning

confidence: 77%

“…Being aimed at mesh independent results, the Ct of the scaled rotor was compared against the selected scenario at primary carriage speed of 1 m/s (with 14 rad/s rotor rotational speed for 7 TSR), which is 1 m/s constant water inlet velocity BC in CFD simulations. The results were published by the authors [1] already. For the validation with reasonable accuracy, medium size mesh model was used in CFD model for static and unsteady experimental scenario.…”

Section: Mesh Sensitivity Study Static Case Simulation and Validationmentioning

confidence: 94%

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Numerical Validation of Floating Offshore Wind Turbine Scaled Rotors for Surge Motion

Sivalingam¹,

Martin

Wala³

2018

Energies

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Aerodynamic performance of a floating offshore wind turbine (FOWT) is significantly influenced by platform surging motions. Accurate prediction of the unsteady aerodynamic loads is imperative for determining the fatigue life, ultimate loads on key components such as FOWT rotor blades, gearbox and power converter. The current study examines the predictions of numerical codes by comparing with unsteady experimental results of a scaled floating wind turbine rotor. The influence of platform surge amplitude together with the tip speed ratio on the unsteady aerodynamic loading has been simulated through unsteady CFD. It is shown that the unsteady aerodynamic loads of FOWT are highly sensitive to the changes in frequency and amplitude of the platform motion. Also, the surging motion significantly influences the windmill operating state due to strong flow interaction between the rotating blades and generated blade-tip vortices. Almost in all frequencies and amplitudes, CFD, LR-BEM and LR-uBEM predictions of mean thrust shows a good correlation with experimental results.

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Section: Introductionmentioning

confidence: 77%

Section: Mesh Sensitivity Study Static Case Simulation and Validationmentioning

confidence: 94%

Numerical Validation of Floating Offshore Wind Turbine Scaled Rotors for Surge Motion

Sivalingam¹,

Martin

Wala³

2018

Energies

Self Cite

View full text Add to dashboard Cite

show abstract

“…This paper is an extension and continuation of the earlier work that has been presented in 2018 2nd International Conference on Green Energy and Applications of IEEE (ICGEA) [1]. The insatiable demand for the energy and the rising greenhouse gas emissions push the energy sector towards renewable energy.…”

Section: Introductionmentioning

confidence: 74%

“…The CFD simulations were carried out with uniform water velocity at the inlet boundary for the static case scenarios (without surge motion) as shown in Table 2 before carrying out the unsteady test case simulations. For mesh sensitive study, the rotor thrust co-efficient was compared against the chosen case of 14 rad/s with 7 TSR and 1 m/s water speed, which is the representative of 1m/s tow speed of the carriage mounted with scaled physical rotor as in Table 2 and the results were published by the authors [1]. Medium size mesh model was used in CFD for the validation purposes of static and unsteady test experimental cases due to the reasonable accuracy and computational time.…”

Section: Mesh Sensitivity Study Static Case Simulation and Validationmentioning

confidence: 99%

“…Hence the assumptions in BEM are not applicable [5] for floating offshore turbines where the pitching and surging motions [6] of the platform leads to the turbine rotor going through different wake states as shown in Fig 1. Various non-linear effects like rotor-wake interactions, wake-wake interactions, wake meandering etc., are not accounted in BEM theory. [1] Lloyds Register (LR) has been actively involved in the development of numerical models and experimental modelling. Experiments on scaled rotor provides an insight on the aerodynamic loading of the rotor and to validate the non-linear models.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Validation of Floating Offshore Wind Turbine Scaled Rotor for Surge Motion

Sivalingam¹,

Martin²,

Wala³

2018

Preprint

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Coupled Aero–Hydrodynamic Analysis in Floating Offshore Wind Turbines: A Review of Numerical and Experimental Methodologies

He,

Men,

Jiao

et al. 2024

JMSE

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Floating offshore wind turbines (FOWTs) have received increasing attention as a crucial component in renewable energy systems in recent years. However, due to the intricate interactions between aerodynamics and hydrodynamics, accurately predicting the performance and response remains a challenging task. This study examines recent advancements in the coupled aero–hydrodynamic numerical simulations for horizontal-axis FOWTs, categorizing existing research by coupling methods: uncoupled, partially coupled, and fully coupled. The review summarizes models, methodologies, and key parameters investigated. Most partially coupled analyses rely on forced oscillation, while the interplay between aerodynamics and elasticity, as well as interactions among multiple FOWTs, remain under-explored. Additionally, this review describes relevant physical model tests, including wave basin tests, wind tunnel tests, and real-time hybrid tests (RTHT). Although RTHT faces issues related to system time delays, they have garnered significant attention for addressing scale effects. The paper compares the three coupling methods, emphasizing the importance of selecting the appropriate approach based on specific design stage requirements to balance accuracy and computational efficiency. Finally, it suggests future research directions, offering a meaningful reference for researchers engaged in studying the aero–hydrodynamic behavior of FOWTs.

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CFD Validation of Scaled Floating Offshore Wind Turbine Rotor

Cited by 3 publications

References 4 publications

Numerical Validation of Floating Offshore Wind Turbine Scaled Rotors for Surge Motion

Numerical Validation of Floating Offshore Wind Turbine Scaled Rotors for Surge Motion

Numerical Validation of Floating Offshore Wind Turbine Scaled Rotor for Surge Motion

Coupled Aero–Hydrodynamic Analysis in Floating Offshore Wind Turbines: A Review of Numerical and Experimental Methodologies

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