Results 31 to 40 of about 527,241 (142)
Thermal-barrier coatings for more efficient gas-turbine engines
, 2012 Gas-turbine engines used in transportation, energy, and defense sectors rely on high-temperature thermal-barrier coatings (TBCs) for improved efficiencies and power. The promise of still higher efficiencies and other benefits is driving TBCs research and
D. Clarke, M. Oechsner, N. Padture
semanticscholar +1 more source
Influence of atmospheric conditions on the power production of utility-scale wind turbines in yaw misalignment [PDF]
arXiv, 2020 The intentional yaw misalignment of leading, upwind turbines in a wind farm, termed wake steering, has demonstrated potential as a collective control approach for wind farm power maximization. The optimal control strategy, and resulting effect of wake steering on wind farm power production, are in part dictated by the power degradation of the upwind ...
arxiv
, 2016 Power curve of a wind turbine depicts the relationship between output power and hub height wind speed and is an important characteristic of the turbine.
Vaishali Sohoni, S. Gupta, R. Nema
semanticscholar +1 more source
Research on Failure Characteristics of Circular Expansion Foundation of Large Wind Turbine [PDF]
arXiv, 2020 Wind power as clean energy has been widely promoted. However, during the operation of a wind turbine in a mountainous area, a large number of instability phenomena appear in the wind turbine foundation. To study the damage characteristics of a mountain wind turbine foundation, the influence of topography on a mountain wind turbine is considered ...
arxiv
, 2016 . An intentional yaw misalignment of wind turbines is currently discussed as one possibility to increase the overall energy yield of wind farms.
L. Vollmer +3 more
semanticscholar +1 more source
Wind Energy, 2018 Modern offshore wind turbines are susceptible to blade deformation because of their increased size and the recent trend of installing these turbines on floating platforms in deep sea. In this paper, an aeroelastic analysis tool for floating offshore wind
Yuanchuan Liu +3 more
semanticscholar +1 more source
Geometric and Control Optimization of a Two Cross-Flow Turbine Array [PDF]
arXiv, 2020 Cross-flow turbines, also known as vertical-axis turbines, convert the kinetic energy in moving fluid to mechanical energy using blades that rotate about an axis perpendicular to the incoming flow. In this work, the performance of a two-turbine array in a recirculating water channel was experimentally optimized across sixty-four unique array ...
arxiv
Impact of Environmental Turbulence on the Performance and Loadings of a Tidal Stream Turbine
Flow Turbulence and Combustion, 2018 A large-eddy simulation (LES) of a laboratory-scale horizontal axis tidal stream turbine operating over an irregular bathymetry in the form of dunes is performed.
Pablo Ouro, T. Stoesser
semanticscholar +1 more source
Simulations of an offshore wind farm using large eddy simulation and a torque-controlled actuator disc model [PDF]
, 2014 We present here a computational fluid dynamics (CFD) simulation of Lillgrund offshore wind farm, which is located in the Oresund Strait between Sweden and Denmark. The simulation combines a dynamic representation of wind turbines embedded within a Large-Eddy Simulation CFD solver, and uses hr-adaptive meshing to increase or decrease mesh resolution ...
arxiv +1 more source
A review of rotating stall in reversible pump turbine
, 2017 Currently, operations of reversible pump turbines in pumped hydro energy storage plant suffer great instability problems in the well-known S-shaped characteristic regions, leading to the failure of start, significant pressure fluctuations, and severe ...
Yuning Zhang, Yuning Zhang, Yulin Wu
semanticscholar +1 more source