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Coherent flow structures in the wake of a model floating wind turbine under pitch and roll motions

Author

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  • Mian, H.H.
  • Messmer, T.
  • Stoevesandt, B.
  • Siddiqui, M.S.

Abstract

This research expands the understanding of the wake dynamics of floating offshore wind turbines (FOWTs) subjected to platform motion. Through high-fidelity computational fluid dynamics (CFD) simulation using OpenFOAM, the study investigates the formation of coherent structures in the wake of a model floating wind turbine under low inflow turbulence (TI∞=0.3%). Platform pitch and roll motions are studied separately, and their effects on the development of periodic wake structures are analyzed. This work considers idealized harmonic motion characterized by a platform Strouhal number St=fpD/U with fp the platform motion frequency, D the rotor diameter and U the inflow wind speed. The numerical results show a good agreement with previously published experimental data for velocity deficit, turbulence intensity levels, and wake recovery.

Suggested Citation

  • Mian, H.H. & Messmer, T. & Stoevesandt, B. & Siddiqui, M.S., 2025. "Coherent flow structures in the wake of a model floating wind turbine under pitch and roll motions," Energy, Elsevier, vol. 335(C).
    • Handle: RePEc:eee:energy:v:335:y:2025:i:c:s036054422503854x
    DOI: 10.1016/j.energy.2025.138212
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