Results 141 to 150 of about 1,646 (188)

Dragonfly-Wing-Inspired Bluff-Body Piezoelectric Harvester for Efficient Low-Wind-Speed Energy Harvesting. [PDF]

Micromachines (Basel)
Zhou Z, Shang X, Xia Y, Zhu P.
europepmc   +1 more source

Bats flying through a Y-maze are visually attracted to wind turbine surfaces. [PDF]

Biol Lett
Jonasson KA, Corcoran AJ, Dempsey L, Weller TJ, Clerc J.   +4 more
europepmc   +1 more source

A dual doubly-fed generator system supplied by a five-phase voltage inverter. [PDF]

Sci Rep
Blecharz K, Kondratenko D.
europepmc   +1 more source

An aeroelastic wind energy harvester with continuous orbiting motion and no friction components. [PDF]

Sci Rep
Denissenko P, Tucker Harvey S.
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Meteorological Controls on Wind Turbine Wakes

Proceedings of the IEEE, 2013
The primary control on the magnitude of the power losses induced by wind turbine wakes in large wind farms is the hub-height wind speed via its link to the turbine thrust coefficient. Hence, at low to moderate wind speeds (between cut-in and rated turbine wind speeds) when the thrust coefficient is high, wake losses are proportionally larger and ...
Rebecca J. Barthelmie, Kurt S. Hansen, Sara C. Pryor   +2 more
openaire   +2 more sources

Visualization of the tip vortices in a wind turbine wake

Journal of Visualization, 2011
In the present study, an experimental study was conducted to characterize the formation and the evolution of the helical tip vortices and turbulent flow structures in the wake of a horizontal axis wind turbine model placed in an atmospheric boundary layer wind.
Zifeng Yang, Partha Sarkar, Hui Hu
openaire   +2 more sources

Wind turbine wake aerodynamics

Progress in Aerospace Sciences, 2003
Abstract The aerodynamics of horizontal axis wind turbine wakes is studied. The contents is directed towards the physics of power extraction by wind turbines and reviews both the near and the far wake region. For the near wake, the survey is restricted to uniform, steady and parallel flow conditions, thereby excluding wind shear, wind speed and rotor
L.J. Vermeer, J.N. Sørensen, A. Crespo
openaire   +1 more source

Wind Tunnel Investigation on Wake Effects of a Wind Turbine

2009
The flow field in the wake of a an horizontal axis wind turbine was studied through wind tunnel tests at the Mechanical Department of the Politecnico di Milano. Aim of the research is to measure the wind flow in different points in the wake in order to characterize the flow blowing on structures that are positioned downwind a wind turbine and ...
DIANA, GIORGIO, ROCCHI, DANIELE, GIAPPINO, STEFANO GIUSEPPE   +2 more
openaire   +2 more sources

Turbulent Wind Turbine Wakes in a Wind Farm

2012
A model of flow in a cluster of wind turbines has been developed. The model predicts average and standard deviation of wind speed in a wind farm as function of ambient wind speed, wind direction and turbulence intensity. In this paper the sub-models for velocity deficit and added turbulence of a single wind turbine are presented.
Arno J. Brand, Jan Willem Wagenaar
openaire   +1 more source

A new analytical model for wind-turbine wakes

Renewable Energy, 2014
A new analytical wake model is proposed and validated to predict the wind velocity distribution downwind of a wind turbine. The model is derived by applying conservation of mass and momentum and assuming a Gaussian distribution for the velocity deficit in the wake.
Majid Bastankhah, Fernando Porté-Agel
openaire   +2 more sources