CM
C. Miron Vidal
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Wake Aerodynamics of Floating Offshore Wind Turbines
Experimental Wake Characterization under Imposed Motions
As offshore wind energy expands into deeper waters, Floating Offshore Wind Turbines (FOWTs) are essential. This thesis investigates how complex floating motions affect wake behavior and recovery, addressing a key gap in experimental data. A 1:148 scale DTU 10MW turbine was mounted on a six-degrees-of-freedom Hexapod and tested in the Open Jet Facility at TU Delft. Using 3D Particle Tracking Velocimetry with Helium-Filled Soap Bubbles and high-speed imaging, detailed flow fields were reconstructed. Results show that the tested low-frequency surge motion improves wake recovery by 40% compared to static conditions at a distance of 5D, while high-frequency pitch has the least benefit. Turbulence, vorticity, and spectral analyses confirm enhanced mixing and earlier vortex diffusion under motion, offering valuable insights for farm layout optimization.
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As offshore wind energy expands into deeper waters, Floating Offshore Wind Turbines (FOWTs) are essential. This thesis investigates how complex floating motions affect wake behavior and recovery, addressing a key gap in experimental data. A 1:148 scale DTU 10MW turbine was mounted on a six-degrees-of-freedom Hexapod and tested in the Open Jet Facility at TU Delft. Using 3D Particle Tracking Velocimetry with Helium-Filled Soap Bubbles and high-speed imaging, detailed flow fields were reconstructed. Results show that the tested low-frequency surge motion improves wake recovery by 40% compared to static conditions at a distance of 5D, while high-frequency pitch has the least benefit. Turbulence, vorticity, and spectral analyses confirm enhanced mixing and earlier vortex diffusion under motion, offering valuable insights for farm layout optimization.