Results 141 to 150 of about 1,368,932 (431)
Reliability assessment of wind turbines
, 2013 Wind turbines can be considered as structures that are in between civil engineering structures and machines since they consist of structural components and many electrical and machine components together with a control system. Further, a wind turbine is not a one-of-a-kind structure but manufactured in series production based on many component tests ...
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Advanced Theory and Simulations, EarlyView.Increasing half‐cycles intensifies turbulence due to enhanced vortex interactions and flow separation at the diverged‐outlets. Longer wavy ducts are shown to increase flow acceleration, resulting in greater output velocities and more turbulent‐kinetic‐energy production. Wave‐period plays a crucial role in determining turbulent intensity, with amplitude
I. L. Animasaun +2 more
wiley +1 more source
The effect of wind direction shear on turbine performance in a wind farm in central Iowa
Wind Energy Science, 2019 . Numerous studies have shown that atmospheric conditions affect wind turbine performance; however, some findings have exposed conflicting results for different locations and diverse analysis methodologies.
M. Sanchez Gomez, J. Lundquist
semanticscholar +1 more source
Turbulence Impact on Wind Turbines: Experimental Investigations on a Wind Turbine Model
Journal of Physics: Conference Series, 2016 Experimental investigations have been conducted by exposing an efficient wind turbine model to different turbulence levels in a wind tunnel. Nearly isotropic turbulence is generated by using two static squared grids: fine and coarse one. In addition, the distance between the wind-turbine and the grid is adjusted.
Youjin Kim +4 more
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A Hollow Shell‐Lattice Soft Robot in Flexible Pipelines with Flowing Fluids
Advanced Science, EarlyView.This study proposes a novel shell‐lattice robot with hollow bodies, capable of crawling through pipes with flowing fluids of high velocities and viscosities and mixed with impurities. The robot also features capabilities of crawling with high payloads, in curved pipes, and unthethered crawling. These unique properties make this robot high promising for
Di Guo, Yiqiang Wang, Zhan Kang
wiley +1 more source
Environmental Policy and Governance, Volume 32, Issue 6, Page 459-477, December 2022., 2022 Abstract Social innovations are grassroots processes aiming to achieve impacts beyond an individual level and towards a broader societal good. The environmental dimension of impacts refers to any direct change to the environment resulting from social innovation activities, products, or services, which are not addressed by pre‐existing systems.
Valentino Marini Govigli +5 more
wiley +1 more source
Nonlinear Stress Analysis of Vertical-Axis Wind Turbine Blades [PDF]
, 1975 L. I. Weingarten, R.E. Nickell
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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
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Advanced Science, EarlyView.A novel symmetrical single‐electrode triboelectric double‐row tapered roller bearing is developed for in situ condition monitoring in wind turbines. The system converts operational friction into electrical signals for simultaneous sensing at both bearing ends.
Song Wang +5 more
wiley +1 more source
Coupled wind turbine design and layout optimization with nonhomogeneous wind turbines
Wind Energy Science, 2018 . In this study, wind farms were optimized to show the benefit of coupling complete turbine design and layout optimization as well as including two different turbine designs in a fixed 1-to-1 ratio in a single wind farm.
A. Stanley, A. Ning
semanticscholar +1 more source