scholarly journals Contribution of large scale coherence to wind turbine power: A large eddy simulation study in periodic wind farms

2018 ◽  
Vol 3 (3) ◽  
Author(s):  
Tanmoy Chatterjee ◽  
Yulia T. Peet
Keyword(s):  
Large Eddy Simulation ◽  
Wind Turbine ◽  
Simulation Study ◽  
Large Scale ◽  
Wind Farms ◽  
Eddy Simulation ◽  
Large Eddy

Comparative Large Eddy Simulation study of a large-scale buoyant fire

2011 ◽  
Vol 47 (9) ◽  
pp. 1197-1208 ◽  
Author(s):  
G. H. Yeoh ◽  
S. C. P. Cheung ◽  
J. Y. Tu ◽  
T. J. Barber
Keyword(s):  
Large Eddy Simulation ◽  
Simulation Study ◽  
Large Scale ◽  
Eddy Simulation ◽  
Large Eddy

scholarly journals Large-Eddy Simulation of Yawed Wind-Turbine Wakes: Comparisons with Wind Tunnel Measurements and Analytical Wake Models

Energies ◽  
2019 ◽  
Vol 12 (23) ◽  
pp. 4574 ◽  
Author(s):  
Mou Lin ◽  
Fernando Porté-Agel
Keyword(s):  
Wind Tunnel ◽  
Large Eddy Simulation ◽  
Wind Turbine ◽  
Wind Farms ◽  
Disk Model ◽  
Actuator Disk ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Wind Tunnel Measurements ◽  
Tangential Forces

In this study, we validated a wind-turbine parameterisation for large-eddy simulation (LES) of yawed wind-turbine wakes. The presented parameterisation is modified from the rotational actuator disk model (ADMR), which takes account of both thrust and tangential forces induced by a wind turbine based on the blade-element theory. LES results using the yawed ADMR were validated with wind-tunnel measurements of the wakes behind a stand-alone miniature wind turbine model with different yaw angles. Comparisons were also made with the predictions of analytical wake models. In general, LES results using the yawed ADMR are in good agreement with both wind-tunnel measurements and analytical wake models regarding wake deflections and spanwise profiles of the mean velocity deficit and the turbulence intensity. Moreover, the power output of the yawed wind turbine is directly computed from the tangential forces resolved by the yawed ADMR, in contrast with the indirect power estimation used in the standard actuator disk model. We found significant improvement in the power prediction from LES using the yawed ADMR over the simulations using the standard actuator disk without rotation, suggesting a good potential of the yawed ADMR to be applied in LES studies of active yaw control in wind farms.

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