Results 21 to 30 of about 15,291 (184)
An Analytical Model for Wind Turbine Wakes under Pressure Gradient
Energies, 2022 In this study, we present an analytical modeling framework for wind turbine wakes under an arbitrary pressure gradient imposed by the base flow. The model is based on the conservation of the streamwise momentum and self-similarity of the wake velocity ...
Arslan Salim Dar, Fernando Porté-Agel
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A double-Gaussian wake model considering yaw misalignment [PDF]
International Journal of Renewable Energy DevelopmentA wake steering has been known to effectively increase wind farm production by deflecting the upstream turbines’ wakes via yaw misalignment, thus minimizing their negative impacts on the downstream turbines' performances.
Qidun Maulana Binu Soesanto +2 more
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An Analytical Model of Wake Deflection Due to Shear Flow [PDF]
, 2010 The main motivation behind this work is to create a purely analytical engineering model for wind turbine wake upward deflection due to shear flow, by developing a closed form solution of the velocity field due to an oblique vortex ring. The effectiveness of the model is evaluated by comparing the results with those of a free-wake model. The solution of
Micallef, D. (author) +3 more
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The analytical wind farm efficiency and wake model EFFWAKE
, 2021 About 10 years ago the analytical wind farm efficiency and wake model EFFWAKE was developed which is based on a simple budget consideration between extracted momentum from the wind by a wind farm and re-supplied momentum from higher atmospheric levels (Emeis 2010).
Emeis, Stefan
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Experimental validation of analytical wake and downstream turbine performance modelling [PDF]
Journal of Physics: Conference Series, 2018 Wake effects in wind farms can cause significant power losses. In order to reduce these losses layout and control optimization can be applied. For this purpose, simple and fast prediction tools for the wake flow are needed. In the first part of this work, five analytical wind turbine wake models are compared to small-scale turbine wind tunnel ...
Polster, Felix +4 more
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A simple stationary semi-analytical wake model [PDF]
, 2009 We present an idealized simple, but fast, semi-analytical algorithm for computation of stationary wind farm wind fields with a possible potential within a multi-fidelity strategy for wind farm topology optimization.Basically, the model considers wakes as linear perturbations on the ambient non-uniform mean wind field, although the modelling of the ...
Larsen, Gunner Chr.
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Experiments in the wind turbine far wake for the evaluation of analytical wake models [PDF]
, 2017 Nowadays, not only the size of single wind turbines but also the size of wind farms is increasing. Understanding the interaction between the turbines and especially the wake formed behind them are getting more important to further improve such wind turbine arrays. Consequently, new issues in wind energy research arise. An experimental wind tunnel study
Garcia Salgado, Luis
core +3 more sources
Analytical models for the asymmetric wake of vertical axis wind turbines
, 2020 Arrays of Vertical Axis Wind Turbines (VAWTs) can achieve larger power generation per land area than horizontal axis turbines farms, due to the positive synergy between VATs in close proximity. Theoretical wake models enable the reliable design of the array layout that maximises the energy output, which need to depict the driving wake dynamics.
Ouro, Pablo, Lazennec, Maxime
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A physically interpretable data-driven surrogate model for wake steering [PDF]
Wind Energy Science, 2022 Wake steering models for control purposes are typically based on analytical wake descriptions tuned to match experimental or numerical data. This study explores whether a data-driven surrogate model with a high degree of physical interpretation can ...
B. A. M. Sengers +4 more
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A New Streamwise Scaling for Wind Turbine Wake Modeling in the Atmospheric Boundary Layer
Energies, 2022 In this study, we aim to investigate if there is a scaling of the streamwise distance from a wind turbine that leads to a collapse of the mean wake velocity deficit under different ambient turbulence levels.
Dara Vahidi, Fernando Porté-Agel
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