Large eddy simulation for the effects of ground roughness and atmospheric stratification on the wake characteristics of wind turbines mounted on complex terrains

T Li, Z Liu, H Wang, W Bian, Q Yang - Energy Conversion and Management, 2022 - Elsevier
The wake characteristics of wind turbine mounted on complex terrains are of great
significance in wind energy utilization. The ground roughness and atmospheric stratification …

Implications of steep hilly terrain for modeling wind-turbine wakes

D Wang, D Feng, H Peng, F Mao… - Journal of Cleaner …, 2023 - Elsevier
Wind energy is crucial to the transition to a carbon-free world. However, new wind farms are
increasingly sited on complex terrain, whose influence on turbine performance is still not …

LiDAR-based observation and derivation of large-scale wind turbine's wake expansion model downstream of a hill

G Xiaoxia, L Luqing, Z Shaohai, Z Xiaoxun, S Haiying… - Energy, 2022 - Elsevier
With the increased installation of wind farm in complex terrain, the wake expansion of large-
scale wind turbine under real conditions downstream a hill is an elusive target and one of …

Time-averaged wind turbine wake flow field prediction using autoencoder convolutional neural networks

Z Zhang, C Santoni, T Herges, F Sotiropoulos… - Energies, 2021 - mdpi.com
A convolutional neural network (CNN) autoencoder model has been developed to generate
3D realizations of time-averaged velocity in the wake of the wind turbines at the Sandia …

Proposal of fully-coupled actuated disk model for wind turbine operation modeling in turbulent flow field due to complex topography

S Fan, Z Liu - Energy, 2023 - Elsevier
The wind speed and direction of flow fields in the time and space domains are complicated
owing to topographic relief, and it is not yet known how time-varying incoming wind speed …

[HTML][HTML] An experimental and analytical study of wind turbine wakes under pressure gradient

AS Dar, AS Gertler, F Porté-Agel - Physics of Fluids, 2023 - pubs.aip.org
This work is dedicated to the systematic investigation of wind turbine wakes under the effect
of pressure gradients. Wind tunnel experiments are carried out with a wind turbine …

[HTML][HTML] Effects of atmospheric stability on the performance of a wind turbine located behind a three-dimensional hill

L Liu, RJAM Stevens - Renewable Energy, 2021 - Elsevier
Understanding the effect of thermal stratification on wind turbine wakes in complex terrain is
essential to optimize wind farm design. The effect of a three-dimensional hill on the …

A momentum-conserving wake superposition method for wind-farm flows under pressure gradient

B Du, M Ge, X Li, Y Liu - Journal of Fluid Mechanics, 2024 - cambridge.org
Pressure gradient over topography will significantly affect wind-farm flow. However,
knowledge gaps still exist on how to superpose wind-turbine wakes in the wind-farm flow …

Brief communication: How does complex terrain change the power curve of a wind turbine?

N Troldborg, SJ Andersen, EL Hodgson… - Wind Energy …, 2022 - wes.copernicus.org
The power performance of a wind turbine in complex terrain is studied by means of Large
Eddy Simulations (LES). The simulations show that the turbine performance is significantly …

[HTML][HTML] Wind turbine wake superposition under pressure gradient

AS Dar, F Porté-Agel - Physics of Fluids, 2024 - pubs.aip.org
We investigate the effect of pressure gradient on the cumulative wake of multiple turbines in
wind tunnel experiments spanning across a range of adverse pressure gradient (APG), zero …