Results 31 to 40 of about 15,291 (184)
Upward Shift of Wind Turbine Wakes in Large Wind Farms
Energies, 2023 A detailed description of wake characteristics is essential for optimizing wind farm performance. Compared with the wake of a stand-alone wind turbine, less attention has been paid to wind turbine wakes in large wind farms.
Zewei Wang, Xiaolei Yang
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Application of the Townsend–George theory for free shear flows to single and double wind turbine wakes – a wind tunnel study [PDF]
Wind Energy Science, 2022 The evolution of the mean velocity and the turbulence downstream of wind turbine wakes within the atmospheric boundary layer has been studied over the past decades, but an analytical description is still missing.
I. Neunaber +3 more
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Lidar measurements of yawed-wind-turbine wakes: characterization and validation of analytical models [PDF]
Wind Energy Science, 2020 Wake measurements of a scanning Doppler lidar mounted on the nacelle of a full-scale wind turbine during a wake-steering experiment were used for the characterization of the wake flow, the evaluation of the wake-steering set-up, and the validation of ...
P. Brugger +10 more
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Wake redirection: comparison of analytical, numerical and experimental models [PDF]
Journal of Physics: Conference Series, 2016 This paper focuses on wake redirection techniques for wind farm control. Two control strategies are investigated: yaw misalignment and cyclic pitch control. First, analytical formulas are derived for both techniques, with the goal of providing a simple physical interpretation of the behavior of the two methods. Next, more realistic results are obtained
Wang, Jiangang +2 more
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Towards higher accuracy in wind farm deficit decay modelling – a comparison
Meteorologische Zeitschrift, 2023 Wind farm wake behaviour and forecasting is gaining the importance recently. It is especially relevant in the German Bight where space for wind farm clusters is limited, and wind farm wake lengths of up to 60 km have been measured.
Moritz Mauz +5 more
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Renewable Energy, 2022 This study is a follow up on a previous one carried out within the frame of the French project SMARTEOLE, during which, a ground-based scanning LiDAR measurement campaign was conducted in the onshore wind farm of Sole du Moulin Vieux. That previous study focused on the wakes of two wind turbines that experienced different degrees of interaction ...
Hegazy, Amr +3 more
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A Simple Model for Wake-Induced Aerodynamic Interaction of Wind Turbines
Energies, 2023 Wind turbine aerodynamic interactions within wind farms lead to significant energy losses. Optimizing the flow between turbines presents a promising solution to mitigate these losses.
Esmail Mahmoodi +5 more
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Frontiers in Mechanical Engineering, 2023 Planned offshore wind farm clusters have a rated capacity of more than 10 GW. The layout optimization and yield estimation of wind farms is often performed with computationally inexpensive, analytical wake models.
Oliver Maas
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Aerodynamic Performance and Wake Flow of Crosswind Kite Power Systems
Energies, 2022 This paper presents some results from a computational fluid dynamics (CFD) model of a multi-megawatt crosswind kite spinning on a circular path in a straight downwind configuration. The unsteady Reynolds averaged Navier-Stokes equations closed by the k−ω
Mojtaba Kheiri +4 more
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An alternative form of the super-Gaussian wind turbine wake model [PDF]
Wind Energy Science, 2020 A new analytical wind turbine wake model, based on a super-Gaussian shape function, is presented. The super-Gaussian function evolves from a nearly top-hat shape in the near wake to a Gaussian shape in the far wake, which is consistent with observations ...
F. Blondel, M. Cathelain
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