Results 21 to 30 of about 2,518 (226)
International Journal of Low-Carbon Technologies, 2010 A modified Darrieus-type windmill is incorporated with a spheroidal-shaped elevated water tank located inside the blade assembly. The blades thus form a shape of elliptical configuration with connection flanges at the top and bottom of the elevated tank portion.
Samuel W. Chung, Gi Su Ju
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Energy Science & Engineering, 2023 The moving surface boundary‐layer control method (MSBC) is a kind of active flow control methods that overcomes the adverse pressure gradient and suppresses the flow separation by directly energizing the boundary layer near the moving surface.
Xinyi Zhang, Xiaojing Sun
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Kontrol Angle of Attack untuk Optimasi Daya padaVertical Axis Wind Turbine Tipe Darrieus
Jurnal Elkomika, 2020 ABSTRAK VAWT (Vertical Axis Wind Turbine) tipe Darrieus NACA0015 merupakan salah satu model dari turbin angin yang bekerja dengan menggunakan angin sebagai sumber penggerak. Namun dari hasil pengamatan, kecepatan angin yang ada tidak konstan setiap saat.
WAHYU AULIA NURWICAKSANA +3 more
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Effect of Helix Angle on the Performance of Helical Vertical Axis Wind Turbine
Energies, 2021 The energy crisis has forced researchers to look for various non-conventional energy sources. Wind energy is one of the potential sources, and researchers have invested resources in developing different kinds of wind turbines. Vertical axis wind turbines
Unnikrishnan Divakaran +3 more
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Direct Measurements of Turbulence and Flow Characteristics of a Vertical Axis Wind Turbine Using the Eddy Covariance Method [PDF]
Iranica Journal of Energy and Environment, 2016 Turbulence intensity measurements of vertical axis wind turbine (VAWT) are essential to detemineitsefficiency and performance. In this study, the eddy covariance (EC) method was used to characterise the flow and directly measure turbulence of a VAWT in a
Y. H’ng, Y. Yusup
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Energies, 2021 In order to get rid of the impact of the global financial crisis and actively respond to global climate change, it has become a common choice for global economic development to develop clean energy such as wind energy, improve energy efficiency and ...
Fang Feng +3 more
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Influence of pitching on performance of VAWTs [PDF]
PAMM, 2013 AbstractSelf‐ starting is the major obstacle to be overcome for successful design of a vertical axis wind turbine (VAWT). In the past has been suggested that pitching the turbine blades such that pitch angle is not 90 degrees allows for self‐starting.
Radu Bogateanu +3 more
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Parameter Optimisation of a H-type Three-blade Contra-rotating Vertical-axis Wind Turbine at Low Tip-speed Ratio [PDF]
Journal of Applied Fluid MechanicsRenewable energy sources such as wind energy can alleviate climate deterioration and the global energy crisis, and a major piece of equipment for capturing wind energy is the vertical-axis wind turbine (VAWT), with contra-rotating VAWTs (CR-VAWTs) having
Z. Zhao, K. Chen, Q. Wang, T. Su, H. Hu
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Surrogate-Based Design Optimization of a H-Darrieus Wind Turbine Comparing Classical Response Surface, Artificial Neural Networks, and Kriging [PDF]
Journal of Applied Fluid Mechanics, 2023 Clean energy sources like wind energy have been receiving much attention, and great emphasis has been given to the design and optimization of horizontal axis wind turbines, but just as important are the vertical axis wind turbines that can be used for ...
D. Cardoso Netto +2 more
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Application of Circulation Controlled Blades for Vertical Axis Wind Turbines [PDF]
, 2013 The blades of a vertical axis wind turbine (VAWT) rotor see an inconsistent angle of attack through its rotation. Consequently, VAWT blades generally use symmetrical aerofoils with a lower lift-to-drag ratio than cambered aerofoils tailored to maximise ...
Velissarios Kourkoulis +5 more
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