Results 61 to 70 of about 821,076 (254)
Advances and Challenges in Analytical Wake Modelling for Offshore Wind Farm Layout Optimization
EnergiesWakes generated by upstream turbines in an offshore wind farm severely reduce the efficiency and power output of downstream turbines. Wind farm layout optimization offers a way to alleviate these negative impacts, where the main challenge lies in ...
Haixiao Liu +3 more
doaj +1 more source
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. +12 more
core +3 more sources
EnergiesIn this study, we investigated the optimization of a wind farm layout on complex mountainous terrain in Yeongdeok, South Korea, with varying hub heights.
Joon Heon Lee +2 more
doaj +1 more source
Exact 1-D Model for Coherent Synchrotron Radiation with Shielding and Bunch Compression
, 2008 Coherent Synchrotron Radiation has been studied effectively using a 1-dimensional model for the charge distribution in the realm of small angle approximations and high energies.
A. W. Chao +5 more
core +2 more sources
Sleeping and Waking Thought: Effects of External Stimulation [PDF]
Sleep, 1986 This article describes some of the variables that distinguish waking and sleeping (REM) thought. Mentation reports from the waking state, as described here, tend to have more topic shifts than those from the REM state, which often have a single-theme storylike quality. It is assumed that heightened response thresholds to sensory stimuli, in conjunction
M C, Wollman, J S, Antrobus
openaire +2 more sources
Comparison of Different Driving Modes for the Wind Turbine Wake in Wind Tunnels
Energies, 2020 The wake of upstream wind turbine is known to affect the operation of downstream turbines and the overall efficiency of the wind farm. Wind tunnel experiments provide relevant information for understanding and modeling the wake and its dependency on the ...
Bingzheng Dou +5 more
doaj +1 more source
Wake and wave resistance on viscous thin films
, 2016 The effect of an external pressure disturbance, being displaced with a constant speed along the free surface of a viscous thin film, is studied theoretically in the lubrication approximation in one- and two-dimensional geometries.
Benzaquen, Michael +3 more
core +3 more sources
The disappearance of laminar and turbulent wakes in complex flows [PDF]
, 2002 The singular effects of steady large-scale external strain on the viscous wake generated by a rigid body and the overall flow field are analysed. In an accelerating flow strained at a positive rate, the vorticity field is annihilated owing to positive ...
Eames, I, Hunt, JCR
core +1 more source
Refined Wind Simulation Based on Large Eddy Simulation and Mesoscale Numerical Weather Model
南方能源建设[Introduction] Combining mesoscale numerical model and large eddy simulation (LES) model, numerical sumulation of sub-kilometer-scale project unit placement is carried out, which takes into account atmospheric boundary layer changes. It provides offshore
Minchao OU, Di WU, Min ZHANG
doaj +1 more source
Unsteady Aerodynamic Interaction Between Rotor and Ground Obstacle [PDF]
, 2018 The mutual aerodynamic interaction between rotor wake and surrounding obstacles is complex, and generates high compensatory workload for pilots, degradation of the handling qualities and performance, and unsteady force on the structure of the obstacles.
Barakos, George N. +4 more
core