Results 31 to 40 of about 194,281 (299)

Evolution of eddy viscosity in the wake of a wind turbine [PDF]

Wind Energy Science, 2023
The eddy viscosity hypothesis is a popular method in wind turbine wake modeling for estimating turbulent Reynolds stresses. We document the downstream evolution of eddy viscosity in the wake of a wind turbine from experimental and large-eddy-simulation ...
R. Scott, L. Martínez-Tossas, J. Bossuyt, N. Hamilton, R. B. Cal   +4 more
doaj   +1 more source

A linear wake expansion function for the double‐Gaussian analytical wake model

Energy Science & Engineering, 2023
The double‐Gaussian (DG) approach for analytical wake modeling leads to a better understanding of the wake transition mechanism within a full‐wake region behind a non‐yawed horizontal‐axis wind turbine (HAWT).
Qidun Maulana Binu Soesanto, Tsukasa Yoshinaga, Akiyoshi Iida   +2 more
doaj   +1 more source

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

Modeling Annual Electricity Production and Levelized Cost of Energy from the US East Coast Offshore Wind Energy Lease Areas

Energies, 2023
Offshore wind energy development along the East Coast of the US is proceeding quickly as a result of large areas with an excellent wind resource, low water depths and proximity to large electricity markets. Careful planning of wind turbine deployments in
Rebecca J. Barthelmie, Gunner C. Larsen, Sara C. Pryor   +2 more
doaj   +1 more source

Two ResNet Mini Architectures for Aircraft Wake Vortex Identification

IEEE Access, 2023
The identification of aircraft wake vortex is an essential issue in the operation of airspace utilization ratio. In particular, accurately identifying wake vortex in fine classification is helpful to guide separation standards under realistic airport ...
Siyuan Duan, Weijun Pan, Yuanfei Leng, Xiaolei Zhang   +3 more
doaj   +1 more source

Influence of blade aerodynamic model on the prediction of helicopter high-frequency airloads [PDF]

, 2011
Brown’s vorticity transport model has been used to investigate the influence of the blade aerodynamic model on the accuracy with which the high-frequency airloads associated with helicopter blade–vortex interactions can be predicted.
Benoît B., Boyd D. D., Duraisamy K., Hopkins A. S., Johnson W., Kelly M. E., Küssner H. G., Leishman J. G., Lim J. W., Lim J. W., Mary E. Kelly, Pengel K., Richard E. Brown, Schneider O., Thom A., Toro E. F., van der Wall B. G., Whitehouse G., Yu Y. H.   +18 more
core   +1 more source

Review on Dynamic Inflow Sensing Layout Optimization for Large-Scale Wind Farms: Wake Modeling, Data-Driven Prediction, and Multi-Objective Uncertainty Optimization

Energies
Large-scale wind farms operate under highly unsteady atmospheric inflows, where transient turbulence, dynamic wake interactions, and inflow-wake coupling reduce energy production and exacerbate turbine loads.
Rongzhe Yang, Tenggang Cui, Zhenman Chen, Shijin Ma, Hongrui Ping, Fulong Wei, Zhenbo Gao, Guanlin Lu, Huiwen Liu, Lidong Zhang   +9 more
doaj   +1 more source

Modeling the Radar Signature of Raindrops in Aircraft Wake Vortices [PDF]

, 2013
The present work is dedicated to the modeling and evaluation of the radar signature of raindrops within wake vortices. This is achieved through the computation of the motion equation of raindrops within the wake vortex flow.
Jeannin, Nicolas, Liu, Zongxhun, Vincent, François, Wang, Xuesong   +3 more
core   +1 more source

Modeling the plasma near-wakes [PDF]

AIAA Journal, 1980
An ambient unmagnetized plasma is considered in which a flat-based projectile of radius R and zero surface potential moves along its axis of symmetry at a constant mesothermal speed. The plasma cavity-filling process is likened to the transient flow associated with a radially imploding cylindrical shock seen immediately after the rupture of a ...
Liu, Vi-Cheng., Ying, S. J.
openaire   +2 more sources

Wind turbine wake dynamics subjected to atmospheric gravity waves: a measurement-driven large-eddy simulation study [PDF]

Wind Energy Science
Atmospheric gravity waves (AGWs) are large-scale wave-like flow structures commonly generated when atmospheric flows are vertically perturbed by topographical features or meteorological phenomena.
D. Feng, D. Feng, N. Dangi, S. Watson
doaj   +1 more source