Results 21 to 30 of about 221,361 (152)

An Analytical Model for Wind Turbine Wakes under Pressure Gradient

open access: yesEnergies, 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
doaj   +1 more source

Brief communication: A double-Gaussian wake model [PDF]

open access: yesWind Energy Science, 2020
In this paper, an analytical wake model with a double-Gaussian velocity distribution is presented, improving on a similar formulation by Keane et al. (2016).
J. Schreiber, A. Balbaa, C. L. Bottasso
doaj   +1 more source

Analytical Modeling for Prediction of Horizontal-Axis Wind Turbines Power Generation in Wind Farms Based on an Analytical Wake Model [PDF]

open access: yesIranica Journal of Energy and Environment, 2022
The development of models that predict power production of wind farms (WFs) by considering the interacting wakes is important; because wakes of the turbines exert a significant influence on power production of turbines, and hence on the layout of wind ...
P. A. Ayoubi, M. E. Yazdi, I. Harsini
doaj   +1 more source

A physical wind‐turbine wake growth model under different stratified atmospheric conditions

open access: yesWind Energy, 2022
The wind‐turbine wake growth is crucial for wake assessment. At present, it can only be determined empirically, which is the primary source of prediction errors in the analytical wake model, and a physically‐based method is urgently needed. Recently, the
Bowen Du, Mingwei Ge, Yongqian Liu
doaj   +1 more source

Analytical Modeling of Wind Farms: A New Approach for Power Prediction

open access: yesEnergies, 2016
Wind farm power production is known to be strongly affected by turbine wake effects. The purpose of this study is to develop and test a new analytical model for the prediction of wind turbine wakes and the associated power losses in wind farms.
Amin Niayifar, Fernando Porté-Agel
doaj   +1 more source

Bayesian uncertainty quantification framework for wake model calibration and validation with historical wind farm power data

open access: yesWind Energy, 2023
The expected growth in wind energy capacity requires efficient and accurate models for wind farm layout optimization, control, and annual energy predictions. Although analytical wake models are widely used for these applications, several model components
Frederik Aerts   +2 more
doaj   +1 more source

Modelling of coupled cross-flow/in-line vortex-induced vibrations using double Duffing and van der Pol oscillators [PDF]

open access: yes, 2012
Many studies have typically applied a linear structural spring–mass–damper oscillator and a van der Pol wake oscillator to model a one-dimensional cross-flow vortex-induced vibration (VIV).
Srinil, Narakorn, Zanganeh, Hossein
core   +1 more source

Wind Turbine Wake Characterization with Nacelle-Mounted Wind Lidars for Analytical Wake Model Validation

open access: yesRemote Sensing, 2018
This study presents the setup, methodology and results from a measurement campaign dedicated to the characterization of full-scale wind turbine wakes under different inflow conditions.
Fernando Carbajo Fuertes   +2 more
doaj   +1 more source

A Novel Analytical Wake Model with a Cosine-Shaped Velocity Deficit

open access: yesEnergies, 2020
A novel analytical model is proposed and validated in this paper to predict the velocity deficit in the wake downwind of a wind turbine. The model is derived by employing mass and momentum conservation and assuming a cosine-shaped distribution for the ...
Ziyu Zhang, Peng Huang, Haocheng Sun
doaj   +1 more source

A simple vortex model applied to an idealized rotor in sheared inflow [PDF]

open access: yesWind Energy Science, 2023
A simple analytical vortex model is presented and used to study an idealized wind turbine rotor in uniform and sheared inflow, respectively. Our model predicts that 1D momentum theory should be applied locally when modelling a non-uniformly loaded rotor ...
M. Gaunaa, N. Troldborg, E. Branlard
doaj   +1 more source

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