Results 101 to 110 of about 31,556 (230)

Investigation of wind turbine flow and wake [PDF]

, 2014
This paper is dedicated to the investigation and analysis of wind turbine wake. An experimental work is undertaken in wind tunnel on a horizontal axis wind turbine model.
DOBREV, Ivan, MASSOUH, Fawaz
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Mutual inductance instability of the tip vortices behind a wind turbine [PDF]

, 2014
Two modal decomposition techniques are employed to analyse the stability of wind turbine wakes. A numerical study on a single wind turbine wake is carried out focusing on the instability onset of the trailing tip vortices shed from the turbine blades ...
Dan S. Henningson, Jens N. Sørensen, Joukowski, Lamb, Lumley, Philipp Schlatter, Prony, Rao, Reza Dadfar, Robert F. Mikkelsen, Sasan Sarmast, Stefan Ivanell, Sørensen, Walther   +13 more
core   +2 more sources

Numerical Computations of Wind Turbine Wakes

, 2007
Numerical simulations of the Navier-Stokes equations are performed to achieve a better understanding of the behaviour of wakes generated by wind turbines.
Stefan Ivanell, Jens N. Sørensen, Dan Henningson   +2 more
openaire   +2 more sources

Near-wake flow structure downwind of a wind turbine in a turbulent boundary layer [PDF]

, 2018
Wind turbines operate in the surface layer of the atmospheric boundary layer, where they are subjected to strong wind shear and relatively high turbulence levels.
Markfort, Corey, Porté-Agel, Fernando, Zhang, Wei   +2 more
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Fish schooling as a basis for vertical axis wind turbine farm design [PDF]

, 2000
Most wind farms consist of horizontal axis wind turbines (HAWTs) due to the high power coefficient (mechanical power output divided by the power of the free-stream air through the turbine cross-sectional area) of an isolated turbine.
Whittlesey, Robert W., Liska, Sebastian, Dabiri, John O.   +2 more
core   +5 more sources

Three-Dimensional Velocity Measurements Around and Downstream of a Rotating Vertical Axis Wind Turbine [PDF]

, 2014
Modern designs for straight-bladed vertical axis wind turbines (VAWTs) feature smaller individual footprints than conventional horizontal axis wind turbines (HAWTs), allowing closer spacing of turbines and potentially greater power extraction for the ...
Coletti, Filippo, Dabiri, John O., Eaton, John K., Ryan, Kevin J.   +3 more
core   +1 more source

Reductions in wind farm main bearing rating lives resulting from wake impingement [PDF]

Wind Energy Science
This paper studies the impacts of wake impingement on main bearing rating lives predicted during the wind turbine design stage. A computational tool chain was developed to explore and quantify these effects across a wind farm populated by 10 MW wind ...
J. Quick, E. Hart, M. B. Nilsen, R. S. Lund, J. Liew, P. Huang, P.-E. Rethore, J. Keller, W. Song, Y. Guo   +9 more
doaj   +1 more source

Investigation of the Rotor Wake of Horizontal Axis Wind Turbine under Yawed Condition

Journal of Applied Fluid Mechanics, 2016
The wake and the lack of existing velocity behind the wind turbine affect the energy production and the mechanical integrity of wind turbines downstream in the wind farms.
B. Noura, I. Dobrev, R. Kerfah, F. Massouh, S. Khelladi   +4 more
doaj  

A CFD Simulation‐Based High‐Fidelity Database for Data‐Driven Wake Model Considering Wind Farm Active Yaw Control

Wind Energy
A thorough understanding of turbine wakes is essential for various aspects of wind energy, including turbine siting, load evaluation, and wind farm control.
Wenhao Xu, Gaohua Li, Feng Guo, Zhen Gao
doaj   +1 more source

Wake Characteristics of Large-scale Wind Turbines [PDF]

The next generation of large-scale wind turbines will exceed 10 MW of rated power and will reach rotor diameters of about 200 m. Their rotor aerodynamics are also extreme with Reynolds numbers that reach 40 million.

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