Results 31 to 40 of about 1,296,720 (203)
Blockage Corrections for Tidal Turbines—Application to an Array of Turbines in the Alderney Race
Energies, 2022 Tidal turbines are located in shallow water depths in comparison to their dimensions (15 m-diameter turbines in 40 m depths, typically). Constrained vertically by the water depth and laterally by neighbouring turbines, the flow within a tidal farm is ...
Nasteho Djama Dirieh +3 more
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Researcher Profile: An Interview with Axton Betz-Hamilton [PDF]
, 2015 Dr. Axton Betz-Hamilton teaches consumer studies courses at Eastern Illinois University, including Personal and Family Finance, Housing, and Consumer Issues.
Axton Betz-Hamilton +1 more
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A large-eddy simulation analysis of collective wind farm axial-induction set points in the presence of blockage [PDF]
Wind Energy ScienceOver the past few years, numerous studies have shown the detrimental impact of flow blockage on wind farm power production. In the present work, we investigate the benefits of a simple collective axial-induction set point strategy for power maximization ...
T. Delvaux, J. Meyers
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Flow physics beyond the Betz limit
, 2023 A pivotal theoretical result of the early 20th century demonstrated that the limit of energy extraction for a wind or tidal stream turbine from an unconstrained flow is 16/27 of the upstream kinetic flux passing through the turbine area, known as the ‘Betz Limit’.
openaire +2 more sources
Theoretical Analysis of Shrouded Horizontal Axis Wind Turbines
Energies, 2017 Numerous analytical studies for power augmentation systems can be found in the literature with the goal to improve the performance of wind turbines by increasing the energy density of the air at the rotor.
Tariq Abdulsalam Khamlaj +1 more
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A Theory for Power Extraction from Passive Accelerators and Confined Flows
Energies, 2020 No accepted fluid theory exists for power extraction from unpressurized confined flow. The absence of a valid model to determine baseline uniform power extraction in confined flows creates difficulties in characterizing the coefficient of power ...
Robert Freda +2 more
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Power Coefficient for Large Wind Turbines Considering Wind Gradient Along Height
EnergiesThe Betz constant is the well-known aerodynamic limit of the maximum power which can be extracted from wind using wind turbine technologies, under the assumption that the wind speed is uniform across a blade disk. However, this condition may not hold for
Saroj Biswas, Jim Shih-Jiun Chen
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Anais da Academia Brasileira de Ciências, 2015 The Diffuser Augmented Wind Turbines (DAWTs) have been widely studied, since the diffusers improve the power coefficient of the wind turbine, particularly of small systems.
DISTERFANO L.M. BARBOSA +5 more
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