Results 31 to 40 of about 275,828 (252)
Effect of blade geometry on the aerodynamic loads produced by vertical-axis wind turbines [PDF]
, 2010 Accurate aerodynamic modelling of vertical-axis wind turbines poses a significant challenge. The rotation of the turbine induces large variations in the angle of attack of its blades that can manifest as dynamic stall.
ETI +5 more
core +1 more source
A methodology for the efficient computer representation of dynamic power systems : application to wind parks [PDF]
, 2012 This contribution presents a methodology to efficiently obtain the numerical and computer solution of dynamic power systems with high penetration of wind turbines.
Abderrazzaq +19 more
core +1 more source
Generator Systems for Marine Current Turbine Applications: A Comparative Study [PDF]
, 2014 Emerging technologies for marine current turbines are mainly related to works that have been carried out on wind turbines and ship propellers. It is then obvious that many electric generator topologies could be used for marine current turbines. As in the
BENBOUZID, Mohamed +2 more
core +2 more sources
Interaction of an Eulerian flue gas plume with wind turbines [PDF]
, 2010 The reduced availability of sites with the requisite wind resource, planning permission and public acceptance for the placement of wind turbines poses a significant challenge to future expansion of the wind energy industry.
Fletcher T.M. +3 more
core +1 more source
Advanced Engineering Materials, EarlyView.Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
BMJ, 2012 Seems to affect health adversely and an independent review of evidence is needed The evidence for adequate sleep as a prerequisite for human health, particularly child health, is overwhelming. Governments have recently paid much attention to the effects of environmental noise on sleep duration and quality, and to how to reduce such noise.1 However ...
Hanning, C.D., Evans, Alun
openaire +4 more sources
Turbine design review text [PDF]
, 1975 Three-volume publication covers theoretical, design, and performance aspects of turbines. Volumes cover thermodynamic and fluid-dynamic concepts, velocity diagram design, turbine blade aerodynamic design, turbine energy losses, supersonic turbines ...
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Advanced Engineering Materials, EarlyView.Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein +2 more
wiley +1 more source
Attraction, Challenge and Current Status of Marine Current Energy
IEEE Access, 2018 Reducing greenhouse gas emissions becomes a top priority in the world with the emergence of global warming and environmental problems. Various renewable energies appear during the last decades.
Hao Chen +5 more
doaj +1 more source
Provision of Ancillary Services with Variable Speed Wind Turbines [PDF]
, 2014 In recent years, the amount of wind turbines in the power system has increased tremendously. As the current wind turbines do not participate in the provision of ancillary services such as frequency control and voltage control, this may compromise the ...
De Kooning, Jeroen +4 more
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