Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Wei, Nathaniel J."'
Autor:
Wei, Nathaniel J., Makdah, Adnan El, Hu, JiaCheng, Kaiser, Frieder, Rival, David E., Dabiri, John O.
The unsteady flow physics of wind-turbine wakes under dynamic forcing conditions are critical to the modeling and control of wind farms for optimal power density. Unsteady forcing in the streamwise direction may be generated by unsteady inflow condit
Externí odkaz:
http://arxiv.org/abs/2406.11693
Autor:
Wei, Nathaniel J., Shende, Omkar B.
Many traditional methods for wind turbine design and analysis assume quasi-steady aerodynamics, but atmospheric flows are inherently unsteady and modern turbine blades are susceptible to aeroelastic deformations. This study therefore evaluates the ef
Externí odkaz:
http://arxiv.org/abs/2212.14517
Power-generation enhancements and upstream flow properties of turbines in unsteady inflow conditions
Autor:
Wei, Nathaniel J., Dabiri, John O.
Energy-harvesting systems in complex flow environments, such as floating offshore wind turbines, tidal turbines, and ground-fixed turbines in axial gusts, encounter unsteady streamwise flow conditions that affect their power generation and structural
Externí odkaz:
http://arxiv.org/abs/2210.14466
Autor:
Wei, Nathaniel J., Dabiri, John O.
The unsteady power generation of a wind turbine translating in the streamwise direction is relevant to floating offshore wind turbines, kite-mounted airborne wind turbines, and other non-traditional wind-energy systems. To study this problem experime
Externí odkaz:
http://arxiv.org/abs/2110.10312
Autor:
Wei, Nathaniel J., Brownstein, Ian D., Cardona, Jennifer L., Howland, Michael F., Dabiri, John O.
Publikováno v:
J. Fluid Mech. 914 (2021) A17
To design and optimize arrays of vertical-axis wind turbines (VAWTs) for maximal power density and minimal wake losses, a careful consideration of the inherently three-dimensional structure of the wakes of these turbines in real operating conditions
Externí odkaz:
http://arxiv.org/abs/1912.10106
Akademický článek
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The generation of uniform, periodic gust disturbances in an experimental context is demonstrated using a single oscillating airfoil. A pitching and heaving symmetric airfoil is suggested as a simpler alternative to existing gust-generation methods. T
Externí odkaz:
http://arxiv.org/abs/1905.06375
Autor:
Wei, Nathaniel J., Kissing, Johannes, Wester, Tom T. B., Wegt, Sebastian, Schiffmann, Klaus, Jakirlic, Suad, Hölling, Michael, Peinke, Joachim, Tropea, Cameron
The unsteady lift response of an airfoil in a sinusoidal gust can be modeled by two transfer functions: the first-order Sears function and the second-order Atassi function, albeit leading to different results under certain conditions. Previous studie
Externí odkaz:
http://arxiv.org/abs/1811.10485
The character of turbulence depends on where it develops. Turbulence near boundaries, for instance, is different than in a free stream. To elucidate the differences between flows, it is instructive to vary the structure of turbulence systematically,
Externí odkaz:
http://arxiv.org/abs/1809.05126
Akademický článek
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