Results 41 to 50 of about 1,191,932 (206)
High-resolution CFD modelling of Lillgrund Wind farm [PDF]
, 2013 We report on a fully dynamic simulation of Vattenfall’s Lillgrund offshore Wind Farm, with a focus on the wake effects of turbines on the performance of individual turbines, and of the farm as a whole.The model uses a dynamic representation of a wind ...
Creech, Angus +5 more
core +1 more source
Wake Effect of a Horizontal Axis Wind Turbine on the Performance of a Downstream Turbine
Energies, 2019 This paper presents wind tunnel tests on the wake characteristics of a three-blade horizontal axis wind turbine and the wake effect on the performance of a downstream turbine.
Haojun Tang +3 more
doaj +1 more source
Journal of Physics: Conference Series, 2015 A team of researchers from the National Renewable Energy Laboratory and Statoil used large-eddy simulations to numerically investigate the merging wakes from upstream offshore wind turbines. Merging wakes are typical phenomena in wind farm flows in which neighboring turbine wakes consolidate to form complex flow patterns that are as yet not well ...
S Lee +6 more
openaire +1 more source
Wake Analysis of Wind Turbine Based on Scanning Images from Doppler Lidar
南方能源建设[Objective] To fully explore the data value of lidar in wind turbine wake observation, conduct an in-depth study on the three-dimensional (3D) wake structure and wind speed attenuation characteristics in wake zone, and further provide references for ...
Yanfeng CAI, Fareng YAO, Jiyan WANG
doaj +1 more source
Measurement procedures for characterization of wind turbine wakes with scanning Doppler wind LiDARs [PDF]
Advances in Science and Research, 2013 The wake flow produced from an Enercon E-70 wind turbine is investigated through three scanning Doppler wind LiDARs. One LiDAR is deployed upwind to characterize the incoming wind, while the other two LiDARs are located downstream to carry out wake ...
G. V. Iungo, F. Porté-Agel
doaj +1 more source
南方能源建设[Objective] The paper takes the NREL-5MW wind turbine as the research object, adopts the control strategy based on the single and combination of the yaw angle(θ) of the upstream wind turbine and the tower height(ΔH) difference of the downstream wind ...
Liuti SHI, Yunhui CHEN, Jiahuang TU
doaj +1 more source
A Comparison of Edge Detectors in the Framework of Wake Pattern Modeling for Wind Turbines
International Journal of Prognostics and Health Management, 2015 To monitor wind turbine health, wind farm operators can take advantage of the historical SCADA (supervisory control and data acquisition) data to generate the wake pattern beforehand for each wind turbine, and then decide in real time whether observed ...
Yanjun Yan +2 more
doaj +1 more source
Advanced Science, EarlyView.Energy‐harvesting‐integrated sensors couple ambient energy conversion with sensing, processing, and wireless communication. This review organizes recent progress through integration architectures and operating principles, revisiting co‐packaged, monolithic, and co‐functional designs together with always‐on, event‐driven, and multi‐modal sensing modes ...
Taehyun Park +5 more
wiley +1 more source
Determination of wind turbine far wake using actuator disk [PDF]
, 2014 The growth in size of wind turbines over the last years is significant. The rotor diameter becomes somehow comparable to atmospheric boundary layer at the land surface. In this case the assumption of uniform velocity of upcoming wind cannot be valid. The
AMER, Rodeyna +2 more
core
Asset Redeployability and Biodiversity Risk
Business Strategy and the Environment, EarlyView.ABSTRACT We examine how asset redeployability influences a firm's exposure to biodiversity risk. Our empirical analysis provides robust evidence that firms possessing greater levels of redeployable assets exhibit significantly lower biodiversity risk.
Mostafa Monzur Hasan +2 more
wiley +1 more source