Results 61 to 70 of about 45,309 (164)

Aerodynamic modeling and wake characterization of a 15-MW offshore wind turbine: Insights from blade-resolved URANS simulations

Applied Ocean Research
As offshore wind turbines continue to scale up beyond 15 MW, their aerodynamic complexity and wake interactions present significant modeling and performance prediction challenges.
Cong Yi, Shenglei Fu, Shangru Jia, Shuyu Yan, Haoran Yang, Hongbo Zhu   +5 more
doaj   +1 more source

Semi-Empirical Model Based on the Influence of Turbulence Intensity on the Wake of Vertical Axis Turbines

Energies
In the context of energy shortages and the development of new energy sources, tidal current energy has emerged as a promising alternative. It is typically harnessed by deploying arrays of multiple water turbines offshore.
Ziyao Wang, Erhu Hou, He Wu
doaj   +1 more source

From turbine-scale to wind farm-scale wake recovery: Understanding the transition

Journal of Renewable and Sustainable Energy
Recent measurements and simulations of wind farm wakes have highlighted interactions with the atmosphere that are not observed for wakes behind isolated turbines. This raises the question: How do wake recovery and its underlying physical mechanisms vary with wind farm size?
J. H. Kasper, R. J. A. M. Stevens
openaire   +2 more sources

Harnessing tidal energy with breakwater-integrated marine turbines for coastal protection

Environmental Research Communications
This study presents the design and evaluation of a vertical axis tidal micro-turbine system integrated into an improved wave breakwater, based on the Wave Breakwater and Coral Restorer (WABCORE) structure, which was developed through a collaborative ...
A A Rahman, M H Abdellah, Ayu Abdul-Rahman   +2 more
doaj   +1 more source

A Nonlinear Wind Turbine Wake Expansion Model Considering Atmospheric Stability and Ground Effects

Energies
This study investigates the influence of atmospheric stability and ground effects on wind turbine wake recovery, challenging the conventional linear relationship between turbulence intensity and wake expansion coefficient.
Xingxing Han, Tongguang Wang, Xiandong Ma, Chang Xu, Shifeng Fu, Jinmeng Zhang, Feifei Xue, Zhe Cheng   +7 more
doaj   +1 more source

Maximizing wind farm power output with the helix approach: Experimental validation and wake analysis using tomographic particle image velocimetry

Wind Energy
Wind farm control can play a key role in reducing the negative impact of wakes on wind turbine power production. The helix approach is a recent innovation in the field of wind farm control, which employs individual blade pitch control to induce a helical
Daan van derHoek, Bert Van denAbbeele, Carlos Simao Ferreira, Jan‐Willem vanWingerden   +3 more
doaj   +1 more source

Dual homeostatic and circadian resonance shapes REM episode duration. [PDF]

Sleep Adv
Zhdanova IV, Kharchenko V, Barbato G, Wehr TA.   +3 more
europepmc   +1 more source

Sleep and mental illness: an umbrella review protocol. [PDF]

BMJ Open
Norton MJ, Walsh K, Bridges G, Ryan M, Carthy A, Daly J, Kearns H.   +6 more
europepmc   +1 more source

Trajectories of sleep disturbances in the subacute phase after stroke: a longitudinal actigraphy study. [PDF]

Sleep Breath
Tenório RA, Biasibetti IG, Mota Alvarenga MT, Teixeira-Salmela LF, Avelino PR, Silva A, Scianni AA.   +6 more
europepmc   +1 more source

Human data at odds and in confirmation of the two-process model of sleep regulation-a perspective. [PDF]

NPJ Biol Timing Sleep
Dijk DJ.
europepmc   +1 more source