Results 41 to 50 of about 45,309 (164)
The Neuroscientist, 2014 The overall function of sleep is hypothesized to provide “recovery” after preceding waking activities, thereby ensuring optimal functioning during subsequent wakefulness. However, the functional significance of the temporal dynamics of sleep, manifested in the slow homeostatic process and the alternation between non–rapid eye movement (NREM) and REM ...
Vyazovskiy, Vladyslav, Delogu, Alessio
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Validation of hydrokinetic turbulent wake predictions and analysis of wake recovery mechanism [PDF]
, 2019 Turbulent simulations are performed for a three-bladed, horizontal-axis hydrokinetic turbine for two different tip-speed-ratios using a resolved rotating blade model with a sliding interface. The thrust, power and intermediate wake predictions are validated by comparison with experimental data, and the results are analyzed to understand the wake ...
Salunkhe, S. +6 more
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Wind Turbine Wake Mitigation through Blade Pitch Offset
Energies, 2017 The reduction in power output associated with complex turbine-wake interactions in wind farms necessitates the development of effective wake mitigation strategies.
Deepu Dilip, Fernando Porté-Agel
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Segmented Gurney Flaps for Improved Wind Turbine Wake Recovery
Wind EnergyWhen wind passes through the rotor of a wind turbine, the velocity is decreased while turbulence is increased. The region of decreased wind speed behind the rotor is known as the wind turbine wake and is bounded by a complex structure of helical vortices.
Nirav Dangi +4 more
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Fluid-Dynamic Mechanisms Underlying Wind Turbine Wake Control with Strouhal-Timed Actuation
EnergiesA reduction in wake effects in large wind farms through wake-aware control has considerable potential to improve farm efficiency. This work examines the success of several emerging, empirically derived control methods that modify wind turbine wakes (i.e.,
Lawrence C. Cheung +3 more
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Unraveling the Mysteries of Turbulence Transport in a Wind Farm
Energies, 2015 A true physical understanding of the mysteries involved in the recovery process of the wake momentum deficit, downstream of utility-scale wind turbines in the atmosphere, has not been obtained to date.
Pankaj K. Jha +3 more
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EnergiesDedicated platforms for floating vertical-axis wind turbines (VAWTs) require an in-depth understanding of their strongly unsteady coupled dynamics, yet the effects of platform configuration on motion stability, aerodynamic loading, and wake recovery ...
Haoda Huang +4 more
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MathematicsGlobal reliance on wind energy continues to grow, leading to an increasing number of wind farms implemented in complex topographies. However, there remains a significant research gap on how the terrain’s features affect the wake recovery, especially when
Andrea Torrejón-Fontana +3 more
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Beyond proportional recovery in wake-up stroke: unsupervised recovery clusters based on the NIHSS
Journal of NeuroEngineering and RehabilitationAbstract Post-stroke rehabilitation is a complex process influenced by several neurophysio-logical factors. The recovery is traditionally predicted based on initial impairment using linear models. The Proportional Recovery Rule (PRR), developed on the Fugl-Meyer scale, has even been proposed as a therapeutic target ...
Andrea Zanola +6 more
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A Study of the Near Wake Deformation of the X‐Rotor Vertical‐Axis Wind Turbine With Pitched Blades
Wind EnergyRecent studies have revealed the large potential of vertical‐axis wind turbines (VAWTs) for high‐energy‐density wind farms due to their favorable wake recovery characteristics. The present study provides an experimental demonstration and proof‐of‐concept
David Bensason +3 more
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