A comprehensive analysis of blade tip for vertical axis wind turbine: Aerodynamics and the tip loss effect

2022 ◽  
Vol 253 ◽  
pp. 115140
Author(s):  
Weipao Miao ◽  
Qingsong Liu ◽  
Zifei Xu ◽  
Minnan Yue ◽  
Chun Li ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Comprehensive Analysis ◽  
Vertical Axis Wind Turbine ◽  
Wind Turbine Aerodynamics ◽  
Blade Tip ◽  
Loss Effect

Vertical Axis Wind Turbine Aerodynamics: Summary and Review of Momentum Models

2019 ◽  
Vol 141 (5) ◽  
Author(s):  
Amin A. Mohammed ◽  
Hassen M. Ouakad ◽  
Ahmet Z. Sahin ◽  
Haitham M. S. Bahaidarah
Keyword(s):  
Performance Evaluation ◽  
Wind Turbine ◽  
Type A ◽  
Vertical Axis ◽  
Short Review ◽  
Performance Estimation ◽  
Vertical Axis Wind Turbine ◽  
Actuator Disk ◽  
Wind Turbine Aerodynamics ◽  
And Performance

Momentum models or streamtube models represent one of the fundamental approaches in modeling the aerodynamics of straight bladed vertical axis wind turbine (SB-VAWT) of Darrieus type. They are based on momentum (actuator disk) theory and widely used in performance evaluation of VAWTs. In this short review, the authors have strived to compile the basic momentum models that have been widely assumed in the literature for design and performance estimation of SB-VAWTs of Darrieus type. A comprehensive demonstration of the formulation needed for the implantation of these models is also proposed. Three streamtube models are investigated in this paper, namely, the single streamtube (SST), the multiple streamtube (MST), and the double multiple streamtube (DMST) models. Each of these models has it merits and demerits which are also thoroughly discussed in this review.

Vertical-Axis Wind Turbine Aerodynamics

2021 ◽  
pp. 1-44
Author(s):  
Delphine De Tavernier ◽  
Carlos Ferreira ◽  
Anders Goude
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbine ◽  
Wind Turbine Aerodynamics

scholarly journals CFD analysis on the influence of angle of attack on vertical axis wind turbine aerodynamics

2021 ◽  
Vol 850 (1) ◽  
pp. 012027
Author(s):  
Prateek Srivastava ◽  
Sachin Kansal ◽  
Ashish Talwalkar ◽  
R Harish
Keyword(s):  
Wind Turbine ◽  
Angle Of Attack ◽  
Vertical Axis ◽  
Cfd Analysis ◽  
Vertical Axis Wind Turbine ◽  
Cfd Simulations ◽  
Ansys Fluent ◽  
Wind Turbine Aerodynamics ◽  
Fluent Software ◽  
Overall Performance

Abstract The Angle of Attack (AOA) in a Vertical Axis Wind Turbine (VAWT) plays an important role in determining the forces and the power generated by the wind turbine. It is difficult to find the suitable AOA due to the complex and constantly changing wind flow patterns. In this paper, we have performed CFD simulations using Ansys Fluent software, based on the constantly changing AOA. The CFD simulations were conducted by selecting a suitable range of AOA and the velocity of the wind. The selected range of AOA varied from 5 degrees to 25 degrees with increments of 5 degrees and the range of the air velocities varied from 7m/s to 21m/s with increments of 7m/s. The tests were also performed using the X-Foil software. The results obtained from the CFD simulations, done by using the Ansys Fluent Software and from the X-Foil software, were then compared to give a more accurate and optimized AOA and velocity value. This optimization of the AOA could enhance the overall performance of the Vertical Axis Wind turbine.

PIV-Based Analysis of 2D and 3D Flow Phenomena of Vertical Axis Wind Turbine Aerodynamics

2014 ◽  
Author(s):  
Giuseppe Tescione ◽  
Daniele Ragni ◽  
Chenguang He ◽  
Carlos Simao Ferreira ◽  
Gerard G. van Bussel
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbine ◽  
3D Flow ◽  
Wind Turbine Aerodynamics ◽  
Flow Phenomena ◽  
2D And 3D

Calculating the aerodynamics of vertical axis wind turbines

2012 ◽  
Vol 34 (3) ◽  
pp. 169-184 ◽  
Author(s):  
Hoang Thi Bich Ngoc
Keyword(s):  
Wind Turbine ◽  
Incidence Angle ◽  
Vertical Axis ◽  
Rotor Blades ◽  
Vertical Axis Wind Turbine ◽  
Horizontal Axis Wind Turbine ◽  
Velocity Triangle ◽  
Relationship Of ◽  
The Relationship

Vertical axis wind turbine technology has been applied last years, very long after horizontal axis wind turbine technology. Aerodynamic problems of vertical axis wind machines are discussible. An important problem is the determination of the incidence law in the interaction between wind and rotor blades. The focus of the work is to establish equations of the incidence depending on the blade azimuth, and to solve them. From these results, aerodynamic torques and power can be calculated. The incidence angle is a parameter of velocity triangle, and both the factors depend not only on the blade azimuth but also on the ratio of rotational speed and horizontal speed. The built computational program allows theoretically selecting the relationship of geometric parameters of wind turbine in accordance with requirements on power, wind speed and installation conditions.

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