Results 281 to 290 of about 222,754 (312)
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Analytical wake model of tidal current turbine
Energy, 2015Prediction of the wake structure is important to understand the lee flow of a tidal current turbine. The proposed analytical wake model consists of several equations derived from the theoretical works of a ship propeller jet. Axial momentum theory was used to predict the minimum velocity at the immediate plane of the lee wake and followed by the ...
Wei Haur Lam, Long Chen, Roslan Hashim
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Critical evaluation of Wind Turbines’ analytical wake models
Renewable and Sustainable Energy Reviews, 2021Abstract The wind energy sector has faced remarkable growth during the last twenty years in view of tackling the global energy consumption rise and the adverse effects of fossil fuels on humans and the environment. On the other hand, the disperse character of wind energy has raised the need for contemporary Wind Turbines (WTs) to be clustered in ...
John K. Kaldellis +2 more
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Operation assessment of analytical wind turbine wake models
Journal of Wind Engineering and Industrial Aerodynamics, 2022Abstract Wind turbine wakes have a strong impact on wind farms as they affect the power output and the turbulence level. These factors have a determinant impact on turbines lifetime. Thus, wake modelling is of critical importance to the wind energy industry, playing a central role in the optimization of wind farm layouts.
António M.G. Lopes +4 more
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Advancement of an analytical double-Gaussian full wind turbine wake model
Renewable Energy, 2021Abstract A recently proposed analytical wake model for a horizontal axis utility scale wind turbine is revisited, and revised and improved. The model is based upon conservation of momentum in the context of actuator disc theory, and the assumption of a distribution of the double-Gaussian type for the velocity deficit in the wake.
Aidan Keane
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Environmental Progress & Sustainable Energy, 2022
AbstractThe development of easy‐to‐implement 3D analytical models of the wake is highly desirable, due to the critical role played by the prediction of the wake velocity profile in the estimation of power generation and the layout optimization of wind turbines in wind farms. Herein, a 3D analytical model of the wake (based on a 2D analytical model) has
Peyman Asad Ayoubi +2 more
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AbstractThe development of easy‐to‐implement 3D analytical models of the wake is highly desirable, due to the critical role played by the prediction of the wake velocity profile in the estimation of power generation and the layout optimization of wind turbines in wind farms. Herein, a 3D analytical model of the wake (based on a 2D analytical model) has
Peyman Asad Ayoubi +2 more
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On an analytical model of wake vortex separation of aircraft
The Aeronautical Journal, 2016ABSTRACTA theory is presented on the effect of wake turbulence of a leading aircraft on the roll stability of a following aircraft, leading to a simple formula for the safe separation distance between the two aircraft that provides estimates of aircraft separation distances comparable to existing empirical regulations, based on experience.
L.M.B.C. Campos, J.M.G. Marques
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A new analytical model for wind-turbine wakes
Renewable Energy, 2014A 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
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Analytical all-induction state model for wind turbine wakes
Physical Review Fluids, 2022Analytical wind turbine wake models are an integral component of wind farm design and optimization. However, when the turbine induction factor increases, these models are prone to failure, as they do not account for the increasingly important effects of low wake pressure.
Bempedelis, N, Steiros, K
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Study on wind turbine wake effect and analytical model in hilly terrain
Renewable EnergyQingShan Yang +2 more
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