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

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

Energy, 2025, vol. 335, issue C

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.

Keywords: Floating offshore wind turbine; Coherent structure; Wake; Far-wake; Wake recovery (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:335:y:2025:i:c:s036054422503854x

DOI: 10.1016/j.energy.2025.138212

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