Results 111 to 120 of about 13,230 (227)

Generative AI's Impacts on the Environment: What Can Critical Humanities Scholarship Offer Sociological Inquiry?

open access: yesSociology Compass, Volume 20, Issue 5, May 2026.
ABSTRACT In recent years, there has been a rapid and massive expansion of generative artificial intelligence (AI) technologies and infrastructures. Big AI Tech corporations are vigorously marketing these services in the pursuit of profit, despite their devastating impacts on the environment.
Deborah Lupton
wiley   +1 more source

Prediction of low frequency and impulsive sound radiation from horizontal axis wind turbines [PDF]

open access: yes, 1981
Theoretical models to predict the radiation of low frequency and impulsive sound from horizontal axis wind turbines due to three sources: (1) steady blade loads; (2) unsteady blade loads due to operation in a ground shear; (3) unsteady loads felt by the ...
Harris, W. L.   +2 more
core   +1 more source

Numerical validation of the two-scale actuator disc theory for marine turbine arrays [PDF]

open access: yes, 2015
The challenge in the hydrodynamic modelling of tidal and marine turbine farms is to take into account the interaction of flow events across a wide range of scales, such as the blade scale, turbine scale, array scale and regional scale.
Nishino, Takafumi, Perez-Campos, Edgar
core  

Analysis of turbulence and vortex structures by flow mapping [PDF]

open access: yes, 1997
The technique of Particle Image Velocimetry (PIV) flow mapping is reviewed and comparisons made with Laser Doppler Anemometry (LDA). Results are presented showing the application of PlV to the determination of coherent structures in grid-generated ...
Damm, C.E., Greated, C.A., Whale, J.
core   +1 more source

A contra-rotating marine current turbine on a flexible mooring : development of a scaled prototype [PDF]

open access: yes, 2008
The contra-rotating marine current turbine concept developed by the Energy Systems Research Unit at the University of Strathclyde is aimed at extracting energy in a wide range of water depths by 'flying' a neutrally-buoyant device from a flexible ...
Clarke, Joe   +4 more
core  

The effects of atmospheric and wake turbulence on wind turbines and wind turbine wakes

open access: yes, 2015
Wind tunnel studies using model wind turbines have been used to investigate the effects and characteristics of neutral and unstable atmospheric boundary layers on their operation and wake behaviour. Wind turbine arrays have also been arranged to observe the effect of wake interaction.
openaire   +1 more source

Modelling turbulence in axisymmetric wakes: an application to wind turbine wakes

open access: yesJournal of Fluid Mechanics
A novel fast-running model is developed to predict the three-dimensional (3-D) distribution of turbulent kinetic energy (TKE) in axisymmetric wake flows. This is achieved by mathematically solving the partial differential equation of the TKE transport using the Green's function method.
Majid Bastankhah   +4 more
openaire   +3 more sources

Characterization of Flow Interactions in a One-Stage Shrouded Axial Turbine

open access: yesInternational Journal of Aerospace Engineering, 2018
The aim of this paper is to characterize the steady and unsteady flow interactions through a one-stage high-pressure (hp) shrouded axial turbine with a tip cavity.
Adel Ghenaiet
doaj   +1 more source

Flow visualization using momentum and energy transport tubes and applications to turbulent flow in wind farms

open access: yes, 2012
As a generalization of the mass-flux based classical stream-tube, the concept of momentum and energy transport tubes is discussed as a flow visualization tool.
Meneveau, Charles, Meyers, Johan
core   +1 more source

Penn State axial flow turbine facility: Performance and nozzle flow field [PDF]

open access: yes
The objective is to gain a thorough understanding of the flow field in a turbine stage including three-dimensional inviscid and viscid effects, unsteady flow field, rotor-stator interaction effects, unsteady blade pressures, shear stress, and velocity ...
Itoh, S.   +2 more
core   +1 more source

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