Validation of new and existing methods for time-domain simulations of turbulence and loads

We seek to obtain a second-by-second match between the simulated and measured structural loads of a utility-scale wind turbine. To obtain the one-to-one load simulations, we start with the furthest upstream component of the modeling chain: the turbulent inflow. We consider new and existing methods t...

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Bibliographic Details
Published in:Journal of physics. Conference series 2024-06, Vol.2767 (5), p.052057
Main Authors: Doubrawa, P, Rybchuk, A, Friedrich, J, Zalkind, D, Bortolotti, P, Letizia, S, Thedin, R
Format: Article
Language:English
Subjects:
Aerodynamics
Bending moments
Inflow
Large eddy simulation
loads
Machine learning
modeling
Rotors
Simulation
Time domain analysis
Time measurement
Turbulence
Turbulent flow
WIND ENERGY
wind power
Wind turbines
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Summary:We seek to obtain a second-by-second match between the simulated and measured structural loads of a utility-scale wind turbine. To obtain the one-to-one load simulations, we start with the furthest upstream component of the modeling chain: the turbulent inflow. We consider new and existing methods to generate constrained-turbulence flow fields. The new method is based on large-eddy simulations (LES) and machine learning (ML). The existing methods include Kaimal-based TurbSim and the superstatistical wind field model. The inflow measurements used to constrain these simulations are obtained with a nacelle-mounted scanning lidar. We compare the flow fields for the different inflow simulation approaches and validate their associated load predictions against measurements collected in the Rotor Aero-dynamics, Aeroelastics, and Wake (RAAW) field campaign. We find that the rotor-position control developed for this study is key in enabling the time match between measurements and simulations. When this control approach is used, the load simulation performance tracks with the inflow simulation fidelity, with LES+ML yielding errors ≤ 4% for the damage-equivalent loads of flapwise bending moment, and tower fore-aft bending moments.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2767/5/052057