Results 71 to 80 of about 270,110 (384)

Experimental study of yawed inflow around wind turbine rotor [PDF]

open access: yes, 2012
In this article, we present an experimental study in a wind tunnel of a three-bladed, Rutland 503 model, horizontal axis yawed wind turbine. Power measurement and an exploration downstream wake of the turbine using particle image velocimetry measurements
DIZENE, Rabah   +4 more
core   +5 more sources

Wind Turbine Clutter [PDF]

open access: yes, 2010
In this chapter the main effects of wind turbines on the performance of radar systems have been explained. The radar signature of wind turbine clutter is unique and then, it requires a special treatment when developing mitigation techniques. WTC clutter remains spatially static, but it fluctuates continuously in time.
F. Perez-Martinez   +2 more
openaire   +3 more sources

Simulation of vorticity wind turbines

open access: yesHeliyon, 2020
There are a wide variety of devices behaving essentially as flexible and elastic systems while interacting dynamically with fluids, usually water or air, under normal operating conditions. Interactions of this kind involve a double complexity of the dynamics, as the systems go through large deformation due to the flow actions, and simultaneously, the ...
Paolo Sassi   +4 more
openaire   +4 more sources

Advances in Hybrid Icing and Frosting Protection Strategies for Optics, Lens, and Photonics in Cold Environments Using Thin‐Film Acoustic Waves

open access: yesAdvanced Engineering Materials, EarlyView.
This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong   +11 more
wiley   +1 more source

Evaluation of Tip Loss Corrections to AD/NS Simulations of Wind Turbine Aerodynamic Performance

open access: yesApplied Sciences, 2019
The Actuator Disc/Navier-Stokes (AD/NS) method has played a significant role in wind farm simulations. It is based on the assumption that the flow is azimuthally uniform in the rotor plane, and thus, requires a tip loss correction to take into account ...
Wei Zhong   +3 more
doaj   +1 more source

Experimental study on the characteristics of wind turbine wake field considering yaw conditions

open access: yesEnergy Science & Engineering, 2021
This paper explores the wake of a wind turbine yaw and its influence on the output power of the downstream wind turbine. A wind turbine model (hub height and diameter of 1.2 m and 1.0 m, respectively) was used in the experiments, and the yaw angle of the
Xiuyong Zhao   +7 more
doaj   +1 more source

Influence of atmospheric conditions on the power production of utility-scale wind turbines in yaw misalignment [PDF]

open access: yesarXiv, 2020
The intentional yaw misalignment of leading, upwind turbines in a wind farm, termed wake steering, has demonstrated potential as a collective control approach for wind farm power maximization. The optimal control strategy, and resulting effect of wake steering on wind farm power production, are in part dictated by the power degradation of the upwind ...
arxiv  

Noise Measurement of a Wind Turbine using Thick Blades with Blunt Trailing Edge [PDF]

open access: yesarXiv, 2023
The noise generated by wind turbines can potentially cause significant harm to the ecological environment and the living conditions of residents. Therefore, a proper assessment of wind turbine noise is crucial. The IEC 61400-11 standard provides standardized guidelines for measuring turbine noise, facilitating the comparison of noise characteristics ...
arxiv  

Wind Turbine Design: Multi-Objective Optimization [PDF]

open access: yesWind Turbines - Design, Control and Applications, pp.350, 2016, 978-953-51-2496-2, 2016
Within the last 20 years, wind turbines have reached matured and the growing worldwide wind energy market will allow further improvements. In the recent decades, the numbers of research papers that have applied optimization techniques in the attempt to obtain an optimal design have increased.
arxiv   +1 more source

Wind-Turbine and Wind-Farm Flows: A Review [PDF]

open access: yesBoundary-Layer Meteorology, 2019
AbstractWind energy, together with other renewable energy sources, are expected to grow substantially in the coming decades and play a key role in mitigating climate change and achieving energy sustainability. One of the main challenges in optimizing the design, operation, control, and grid integration of wind farms is the prediction of their ...
Sina Shamsoddin   +3 more
openaire   +6 more sources

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