Results 31 to 40 of about 39,286,164 (327)
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
Frontiers in Energy Research, 2022 The development of new wake models is currently one of the key approaches envisioned to further improve the levelized cost of energy of wind power. While the wind energy literature abounds with operational wake models capable of predicting in fast-time ...
Maxime Lejeune +2 more
doaj +1 more source
Design and analysis of a wake model for spatially heterogeneous flow
Wind Energy Science, 2021 . Methods of turbine wake modeling are being developed to more accurately account for spatially variant atmospheric conditions within wind farms. Most current wake modeling utilities are designed to apply a uniform flow field to the entire domain of a ...
A. Farrell +7 more
semanticscholar +1 more source
Aircraft Wake-Vortex Evolution in Ground Proximity: Analysis and Parameterization [PDF]
, 2006 Field measurement data of 282 wake vortex pairs and respective environmental conditions acquired at Frankfurt Airport by means of lidar, Sodar/RASS, and ultrasonic anemometer are used to analyze wake vortex behavior in ground proximity. Exceptional cases
Steen, Meiko +3 more
core +1 more source
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
Applied Energy, 2020 Layout optimization of wind farms constitutes an important and challenging task in complex terrain. This is especially due to the complex interactions of the boundary layer flows in complex terrain and wind turbine wakes, which renders wake modelling in ...
Roberto Brogna +4 more
semanticscholar +1 more source
Prediction of the Open-Water Performance of Ducted Propellers with a Panel Method
Journal of Marine Science and Engineering, 2018 In the present work, a comparison between the results obtained by a panel code with a Reynolds-averaged Navier-Stokes (RANS) code is made to obtain a better insight on the viscous effects of the ducted propeller and on the limitations of the inviscid ...
João Manuel Baltazar +3 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
An alternative form of the super-Gaussian wind turbine wake model
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 ...
F. Blondel, M. Cathelain
semanticscholar +1 more source