Results 71 to 80 of about 15,291 (184)

A vortex sheet based analytical model of the curled wake behind yawed wind turbines

, 2022
Motivated by the need for compact descriptions of the evolution of non-classical wakes behind yawed wind turbines, we develop an analytical model to predict the shape of curled wakes.
Meneveau, Charles, Shapiro, Carl R., Shamsoddin, Sina, Bastankhah, Majid, Gayme, Dennice F.   +4 more
core   +1 more source

Advancing Wake Loss Prediction in Wind Farms through Analytical Machine Learning Hybridization [PDF]

E3S Web of Conferences
Wake models are still important for wind farm evaluation because they are computationally efficient when predicting turbine interactions and performance of the wind farm layout.
Talbi Bouchra, Abdelouahad Bellat, Mansouri Khalifa   +2 more
doaj   +1 more source

A new wake‐merging method for wind‐farm power prediction in the presence of heterogeneous background velocity fields

Wind Energy, 2022
The difference in surface roughness between land and sea, and the terrain complexities, lead to spatially heterogeneous atmospheric conditions, and therefore affect the propagation and dynamics of wind‐turbine and wind‐farm wakes.
Luca Lanzilao, Johan Meyers
doaj   +1 more source

A Three-Dimensional, Analytical Wind Turbine Wake Model: Flow Acceleration, Empirical Correlations, and Continuity

, 2022
A new, three-dimensional, analytical, steady state wake model is presented which includes local flow acceleration near the rotor improving wake description compared to existing models.
Sadek, Zein Ahmad
core   +1 more source

A Three-Dimensional Analytical Model for Wind Turbine Wakes from near to Far Field: Incorporating Atmospheric Stability Effects

Energies
In response to the critical demand for improved characterization of atmospheric stability effects in wind turbine wake prediction, this study proposes and systematically validates a new analytical wake model that incorporates atmospheric stability ...
Xiangyan Chen, Hao Zhang, Ziliang Zhang, Zhiyong Shao, Rui Ying, Xiangyin Liu   +5 more
doaj   +1 more source

A New Wind Turbine CFD Modeling Method Based on a Porous Disk Approach for Practical Wind Farm Design

Energies, 2020
In this study, the new computational fluid dynamics (CFD) porous disk (PD) wake model was proposed in order to accurately predict the time-averaged wind speed deficits in the wind turbine wake region formed on the downstream side by the 2-MW wind turbine
Takanori Uchida, Yoshihiro Taniyama, Yuki Fukatani, Michiko Nakano, Zhiren Bai, Tadasuke Yoshida, Masaki Inui   +6 more
doaj   +1 more source

Comparison of individual versus ensemble wind farm parameterizations inclusive of sub‐grid wakes for the WRF model

Wind Energy, 2022
Wind turbine wakes can be predicted somewhat accurately with mesoscale numerical models, such as the Weather Research and Forecast (WRF) model, via a wind farm parameterization (WFP) that treats the effects of the wakes, which are sub‐grid features, on ...
Yulong Ma, Cristina L. Archer, Ahmad Vasel‐Be‐Hagh   +2 more
doaj   +1 more source

A Three-Dimensional, Analytical Wind Turbine Wake Model: Flow Acceleration, Empirical Correlations, and Continuity

, 2023
A new, three-dimensional, analytical, steady-state wake model is presented that includes local flow acceleration near the rotor, improving the wake description compared to existing models.
Hamilton, Nicholas, Raúl Bayoán Cal, Scott, Ryan, Cal, Raul Bayoan, Nicholas Hamilton, Zein Sadek, Sadek, Zein, Ryan Scott   +7 more
core   +1 more source

First identification and quantification of detached-tip vortices behind a wind energy converter using fixed-wing unmanned aircraft system [PDF]

Wind Energy Science, 2019
In the present study, blade-tip vortices have been experimentally identified in the wake of a commercial wind turbine using the Multi-purpose Airborne Sensor Carrier Mark 3 (MASC Mk 3) unmanned aircraft system (UAS) of the University of Tübingen.
M. Mauz, A. Rautenberg, A. Platis, M. Cormier, J. Bange   +4 more
doaj   +1 more source

Modelling the aerodynamics of vertical-axis wind turbines in unsteady wind conditions

, 2013
Most numerical and experimental studies of the performance of vertical-axis wind turbines have been conducted with the rotors in steady, and thus somewhat artificial, wind conditions - with the result that turbine aerodynamics, under varying wind ...
Scheurich, Frank, Brown, Richard
core   +1 more source