Results 21 to 30 of about 119,524 (265)
Joukowski’s wake model for tip-splitting rotors [PDF]
Journal of Physics: Conference Series, 2021 Abstract The interaction between a tip vortex and a solid surface is responsible for premature structural component fatigue in wind turbines and undesirable noise in helicopter rotors during low speed and descending flight. One noise reduction strategy uses a modified airfoil to split and spread the vorticity in two tip vortices.
Castillo-Castellanos, Andrés +2 more
openaire +5 more sources
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
doaj +1 more source
Energies, 2021 District of Namaacha in Maputo Province of Mozambique presents a high wind potential, with an average wind speed of around 7.5 m/s and huge open fields that are favourable to the installation of wind farms.
Paxis Marques João Roque +2 more
doaj +1 more source
Wind Farm Blockage Revealed by Fog: The 2018 Horns Rev Photo Case
Energies, 2023 Fog conditions at the offshore wind farm Horns Rev 2 were photographed on 16 April 2018. In this study, we present the results of an analysis of the meteorological conditions on the day of the photographs.
Charlotte Bay Hasager +2 more
doaj +1 more source
Towards a Simplified DynamicWake Model Using POD Analysis
Energies, 2015 We apply a modified proper orthogonal decomposition (POD) to large eddy simulation data of a wind turbine wake in a turbulent atmospheric boundary layer. The turbine is modeled as an actuator disk.
David Bastine +3 more
doaj +1 more source
Effects of Wake Shapes on High-Lift System Aerodynamic Predictions
Aerospace, 2017 High-lift devices are commonly modelled using potential flow methods at the conceptual design stage. Often, these analyses require the use of prescribed wake shapes in order to avoid numerical stability issues.
William Bissonnette, Götz Bramesfeld
doaj +1 more source
南方能源建设, 2019 [Introduction] The paper aims to obtain the optimal layout of offshore wind farm and gain the maximum profit in the project life-cycle, it is high necessary to analyze its impact factors.
WU Di, LIU Huaixi, MIAO Desheng
doaj +1 more source
Journal of Physics: Conference Series, 2015 This paper presents a simple physical model to improve the currently used far-wake deficit models in the wind industry. The main improvement is deemed on the determination of the wake deficit in the near-wake. A Vortex Ring Model (VRM) is used to calculate the induced velocities in the near-wake, which are then coupled to the Jensen far-wake model and ...
Van Heemst, J.W. (author) +3 more
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Multiple Wind Turbine Wakes Modeling Considering the Faster Wake Recovery in Overlapped Wakes [PDF]
Energies, 2019 In a wind farm some wind turbines may be affected by multiple upwind wakes. The commonly used approach in engineering to simulate the interaction effect of different wakes is to combine the single analytical wake model and the interaction model. The higher turbulence level and shear stress profile generated by upwind turbines in the superposed area ...
Shao, Zhenzhou +4 more
openaire +2 more sources
Probabilistic estimation of the Dynamic Wake Meandering model parameters using SpinnerLidar-derived wake characteristics [PDF]
Wind Energy Science, 2021 We study the calibration of the Dynamic Wake Meandering (DWM) model using high-spatial- and high-temporal-resolution SpinnerLidar measurements of the wake field collected at the Scaled Wind Farm Technology (SWiFT) facility located in Lubbock, Texas, USA.
D. Conti +3 more
doaj +1 more source