Results 61 to 70 of about 10,195 (155)

CO-LOCATED WAVE AND OFFSHORE WIND FARMS: A PRELIMINARY CASE STUDY OF AN HYBRID ARRAY [PDF]

, 2014
In recent years, with the consolidation of offshore wind technology and the progress carried out for wave energy technology, the option of co-locate both technologies at the same marine area has arisen.
Abanades, J, Astariz, S, Greaves, D, Iglesias, G, Perez Collazo, C   +4 more
core   +3 more sources

Downwind rotor horizontal axis wind turbine noise prediction [PDF]

, 1981
NASA and industry are currently cooperating in the conduct of extensive experimental and analytical studies to understand and predict the noise of large, horizontal axis wind turbines.
Klatte, R. J., Metzger, F. B.
core   +1 more source

Large-eddy simulation of spectral coherence in a wind turbine wake [PDF]

, 2008
This work is mainly dedicated to the study of the characteristics of spectral coherence of turbulence fluctuations in wind turbine wakes. A computational fluid dynamics (CFD) code has been implemented using a large-eddy simulation (LES) approach, which ...
A Crespo, A Jimenez, Bendat J S, Crespo A, Crespo A Hernández J, E Migoya, Frandsen S, Germano M Piomelli U Moin P Cabot W H, Højstrup J Courtney M S, J Garcia, Jimenez A Crespo A Migoya E Garcia J, Larsen G C Madsen H A Sørensen N N, Panofsky H A, Pierce C D Moin P, Senocak I Ackerman A S Kirkpatrik M P Stevens D E Mansour N N   +14 more
core   +2 more sources

Wind Farm Modeling with Interpretable Physics-Informed Machine Learning

Energies, 2019
Turbulent wakes trailing utility-scale wind turbines reduce the power production and efficiency of downstream turbines. Thorough understanding and modeling of these wakes is required to optimally design wind farms as well as control and predict their ...
Michael F. Howland, John O. Dabiri
doaj   +1 more source

Flow and wakes in large wind farms in complex terrain and offshore [PDF]

, 2008
Power losses due to wind turbine wakes are of the order of 10 and 20% of total power output in large wind farms. The focus of this research carried out within the EC funded UPWIND project is wind speed and turbulence modelling for large wind farms ...
Barthelmie, Rebecca J., Cabezón Martínez, Daniel, Frandsen, S.T., Hansen, Kurt S., Neubert, A., Philips, J., Politis, Evangelos S., Prospathopoulos, John, Rados, K., Rathmann, O., Schepers, J.G., Schlez, W., Van Der Pijl, S.P.   +12 more
core  

Wake center position tracking using downstream wind turbine hub loads [PDF]

, 2016
Having an improved awareness of the flow within a wind farm is useful for power harvesting maximization, load minimization and design of wind farm layout.
Bertelè, M., Bottasso, C.L., Cacciola, S., Schreiber, J.   +3 more
core   +1 more source

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

Energies, 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

Wake characteristics of large-scale wind turbines [PDF]

, 2015
The next generation of large-scale wind turbines will exceed 10 MW of rated power and will reach rotor diameters of about 200 m. Their rotor aerodynamics are also extreme with Reynolds numbers that reach 40 million.
Barakos, GN, Leble, V, Wang, Y, White, M
core  

Coupled wake boundary layer model of wind-farms [PDF]

, 2015
We present and test the coupled wake boundary layer (CWBL) model that describes the distribution of the power output in a wind-farm. The model couples the traditional, industry-standard wake model approach with a "top-down" model for the overall wind ...
Barthelmie R. J., Beaucage P., Charles Meneveau, Choi J., Dennice F. Gayme, Eecen P. J., Katić I., Peña A., Richard J. A. M. Stevens, Schlez W., Stevens R. J. A. M., van der Pijl S. P., Özdemir H.   +12 more
core   +3 more sources

Toward Development of a Stochastic Wake Model: Validation Using LES and Turbine Loads

Energies, 2017
Wind turbines within an array do not experience free-stream undisturbed flow fields. Rather, the flow fields on internal turbines are influenced by wakes generated by upwind unit and exhibit different dynamic characteristics relative to the free stream ...
Jae Sang Moon, Lance Manuel, Matthew J. Churchfield, Sang Lee, Paul S. Veers   +4 more
doaj   +1 more source