Computational fluid dynamics analysis of the vertical axis wind turbine blade with tubercle leading edge

2015 ◽  
Vol 7 (3) ◽  
pp. 033124 ◽  
Author(s):  
Chi-Jeng Bai ◽  
Yang-You Lin ◽  
San-Yih Lin ◽  
Wei-Cheng Wang
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Leading Edge ◽  
Vertical Axis ◽  
Wind Turbine Blade ◽  
Dynamics Analysis ◽  
Vertical Axis Wind Turbine ◽  
Computational Fluid Dynamics Analysis

Computational Fluid Dynamics Study of a Small Vertical Axis Wind Turbine with Ball-Shaped Blades

2011 ◽  
Vol 347-353 ◽  
pp. 319-322
Author(s):  
Zu Peng Zhou ◽  
Qiu Yun Mo ◽  
Zhi Peng Lei
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Wind Turbine ◽  
Power Efficiency ◽  
Vertical Axis ◽  
Curvature Radius ◽  
Dynamics Analysis ◽  
Vertical Axis Wind Turbine ◽  
Computational Fluid Dynamics Analysis ◽  
Simulation Results

The computational fluid dynamics analysis of a small vertical axis wind turbine with ball-shaped blades has been done in this paper. First, a three-dimensioned model of the wind turbine with the ball-shaped blades has been constructed by using the software of FLUENT 6.3. Then, by giving the size parameters and shape parameters of the blades, the simulation has been done and the corresponding simulation results have been obtained. The contuours of static pressure around the wind blade area has been shown. The simulated model and the results can be used for finding the factors which will affect the power efficiency of this type of wind turbine in the future. Finally, the simulation results of the blade with zero curvature radius and curvature radius of 2 are shown and compared in order to demonstrate the effectiveness of this computational fluid dynamics analysis method. It can be concluded that the blades with curvature of 2 can obtain more toruqe comparing with the zero one and it would be the more suitable option in the blade design.

Computational Analysis of Symmetric and Cambered Blade Darrieus Vertical Axis Wind Turbine With Bio-Mimicked Blade Design

2022 ◽  
pp. 225-240
Author(s):  
Punit Prakash ◽  
Praveen Laws ◽  
Nishant Mishra ◽  
Santanu Mitra
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Wind Turbine ◽  
Leading Edge ◽  
Vertical Axis ◽  
Symmetric Model ◽  
Blade Design ◽  
Vertical Axis Wind Turbine ◽  
2D Simulation ◽  
Low Performance

Vertical axis wind turbine suffers from low performance, and the need for improvement is a challenge. This work addresses this problem by using computational fluid dynamics. This chapter aims to analyze and compare symmetric and cambered Darrieus turbine. These analyses are usually carried for straight leading-edge blades, and cambered resembles more the natural shape of the wing of birds and other aquatic mammals, which helps them generate extra lift during movement. Moreover, recent studies suggest better performance was observed for NACA0018 symmetric aerofoil blades, and a similar trend has been observed for NACA2412 cambered aerofoil profiles. Turbine models having symmetric NACA0018 and cambered NACA2412 profiles have been studied. By comparing the symmetric model with cambered blade models, differences in coefficient of torque have been presented. OpenFOAM is used for performing the 2D simulation with dynamicOverset-FvMesh for motion solver with overset mesh method. Meshed geometry was constructed with GMSH codes and the simulation uses overPimpleDyMFoam algorithm as a solver.

Strategy for diagnosing the degree of dynamic stall on a vertical-axis wind turbine blade

2022 ◽  
Author(s):  
David Bensason ◽  
Sébastien Le Fouest ◽  
Anna M. Young ◽  
Karen Mulleners
Keyword(s):  
Wind Turbine ◽  
Turbine Blade ◽  
Vertical Axis ◽  
Wind Turbine Blade ◽  
Dynamic Stall ◽  
Vertical Axis Wind Turbine
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