Experimental study of the wake interaction between two vertical axis wind turbines
Wind Energy, 2023 Wakes and wake interactions in wind turbine arrays diminish energy output and raise the risk of structural fatigue; hence, comprehending the features of rotor–wake interactions is of practical relevance.
Ming Huang +3 more
doaj +1 more source
Effects of the steepness on the evolution of turbine wakes above continuous hilly terrain
IET Renewable Power Generation, 2022 Hilly terrain can significantly change the flow characteristics of the atmospheric boundary layer. However, the effects of hilly terrain with different steepness on turbine wakes remain understudied.
Haoze Yang +5 more
doaj +1 more source
New Key Recovery in WAKE Protocol [PDF]
, 2001 Wireless authentication and key establishment (WAKE) protocols are essential in mobile communications. The key recovery mechanism may also be required in mobile communication systems for the investigation of serious crimes and for national security. Recently some protocols that give key recovery in the WAKE protocol have been published.
Kim, CH, Lee, PJ
openaire +2 more sources
Wind, 2022 An accurate choice of the inflow parameters has been shown to affect the CFD results significantly. In this study, the actuator disk method (AD) is used to investigate the effects of the widely used inflow formulations, the logarithmic and power-law ...
Khashayar RahnamayBahambary +1 more
doaj +1 more source
Stroke with unknown time of symptom onset: baseline clinical and magnetic resonance imaging data of the first thousand patients in WAKE-UP (efficacy and safety of mri-based thrombolysis in wake-up stroke: a randomized, doubleblind, placebo-controlled trial) [PDF]
, 2017 Background and Purpose—We describe clinical and magnetic resonance imaging (MRI) characteristics of stroke patients with unknown time of symptom onset potentially eligible for thrombolysis from a large prospective cohort.
Boutitie, Florent +18 more
core +2 more sources
Impact of Turbulent Time Scales on Wake Recovery and Operation
Journal of Physics: Conference Series, 2022 Abstract Enhancing wake recovery behind wind turbines has the potential to significantly improve the power production and efficiency of large wind farms. Rather than investigating turbine control strategies, floater motion or global turbulent quantities such as turbulence intensity, this work aims to study wake stability and recovery ...
E L Hodgson +3 more
openaire +3 more sources
Wake redirection: Comparison of analytical, numerical and experimental models [PDF]
, 2016 This paper focuses on wake redirection techniques for wind farm control. Two control strategies are investigated: yaw misalignment and cyclic pitch control.
Bottasso, Carlo L. +2 more
core +1 more source
Numerical investigation of rotor asymmetry to promote wake recovery
Journal of Physics: Conference Series, 2023 Abstract Tip vortices in the wakes of wind turbines are known to have detrimental effects on downstream turbines such as reduced performance and increased fatigue loading. Rotor asymmetry is investigated as a passive method for mitigating these effects by triggering the helical vortex pairing instability.
Abraham, Aliza +3 more
openaire +3 more sources
Journal of Marine Science and Engineering, 2023 The study of hydrodynamic characteristics of floating double-rotor horizontal axis tidal current turbines (FDHATTs) is of great significance for the development of tidal current energy. In this paper, the effect of roll motion on a FDHATT is investigated
Muyu Zhao, Ying Chen, Jin Jiang
doaj +1 more source
The spatiotemporal pattern of the human electroencephalogram at sleep onset after a period of prolonged wakefulness [PDF]
, 2019 During the sleep onset (SO) process, the human electroencephalogram (EEG) is characterized by an orchestrated pattern of spatiotemporal changes. Sleep deprivation (SD) strongly affects both wake and sleep EEG, but a description of the topographical EEG ...
Aurora D’Atri +8 more
core +2 more sources