Results 41 to 50 of about 41,313 (261)

Fish schooling as a basis for vertical axis wind turbine farm design [PDF]

open access: yes, 2000
Most wind farms consist of horizontal axis wind turbines (HAWTs) due to the high power coefficient (mechanical power output divided by the power of the free-stream air through the turbine cross-sectional area) of an isolated turbine.
Whittlesey, Robert W.   +2 more
core   +8 more sources

Aerodynamic shape optimization of a vertical-axis wind turbine with effect number of blades

open access: yesDyna, 2022
Our research consists of the experimental study of the vertical wind turbine of form H. The study represents the effect of the number of blades in the variation of the number of rotations of the vertical wind turbine, the speed ratio, torque, the power ...
Foued Chabane   +2 more
doaj   +1 more source

Simulating the aerodynamic performance and wake dynamics of a vertical-axis wind turbine [PDF]

open access: yes, 2011
The accurate prediction of the aerodynamics and performance of vertical-axis wind turbines is essential if their design is to be improved but poses a signifi cant challenge to numerical simulation tools.
Brown, Richard   +2 more
core   +1 more source

Vertical-axis wind turbines in oblique flow: sensitivity to rotor geometry [PDF]

open access: yes, 2011
Increasing interest is being shown worldwide in the application of vertical-axis wind turbines for decentralised electricity generation within cities.
Brown, Richard, Scheurich, Frank
core  

Historical development of the windmill [PDF]

open access: yes, 1990
Throughout history, windmill technology represented the highest levels of development in those technical fields now referred to as mechanical engineering, civil engineering, and aerodynamics.
Shepherd, Dennis G.
core   +2 more sources

Low‐Angle Grain Boundaries and Re‐Segregation in Single‐Crystalline Ni‐Base Superalloys

open access: yesAdvanced Engineering Materials, EarlyView.
This work demonstrates that Re‐segregation at low‐angle grain boundaries (LAGBs) in Ni‐base superalloys is influenced by misorientation angle. Advanced microscopy and atom probe tomography reveal that higher misorientation angles increases Re‐segregation.
Alireza B. Parsa   +9 more
wiley   +1 more source

Numerical study to investigate the design parameters of a wind tower to improve the performance of a vertical-axis wind turbine

open access: yesAdvances in Mechanical Engineering, 2017
A wind tower can augment the performance of a vertical-axis wind turbine since it can increase the wind velocity as well as adjust the wind direction. However, it is very important to correctly determine the configuration of the wind tower because the ...
Soo-Yong Cho   +3 more
doaj   +1 more source

Vertical axis hybrid wind turbine design [PDF]

open access: yesJournal of Mechatronics and Artificial Intelligence in Engineering, 2020
Wind energy is one of the alternative energy sources that respond positively to both global warming and energy needs, due to the increasing population density and the adverse effects it has brought in recent years. In this study, modification on current design of wind turbines has been demonstrated in order to increase the energy yield obtained from ...
Ersin Toptas   +2 more
openaire   +1 more source

On the wake of a Darrieus turbine [PDF]

open access: yes, 1981
The theory and experimental measurements on the aerodynamic decay of a wake from high performance vertical axis wind turbine are discussed. In the initial experimental study, the wake downstream of a model Darrieus rotor, 28 cm diameter and a height of ...
Base, T. E.   +3 more
core   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

open access: yesAdvanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan   +5 more
wiley   +1 more source

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