A free vortex simulation method for the straight bladed vertical axis wind turbine

This paper mainly aims to get rotor aerodynamic performance curve and has studied the matching between the rotor and generator based on the numerical simulation method of the computational fluid dynamics, using the finite volume method to calculate the pneumatic performance of H-type wind power generator, so as to provide guidance for the power control of the small h-vertical axis wind turbine.

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Numerical investigation of the effect of triangle strut in vertical axis wind turbine (VAWT)

Mechatronics Electrical Power and Vehicular Technology ◽

10.14203/j.mev.2020.v11.95-101 ◽

2020 ◽

Vol 11 (2) ◽

pp. 95

Author(s):

Tri Admono ◽

Yoyon Ahmudiarto ◽

Amma Muliya Romadoni ◽

Iman Abdurahman ◽

Agus Salim ◽

...

Keyword(s):

Fluid Dynamics ◽

Wind Turbine ◽

Cfd Simulation ◽

Vertical Axis ◽

Simulation Method ◽

Wind Flow ◽

Vertical Axis Wind Turbine ◽

Pressure Losses ◽

Multi Stage ◽

Computational Fluid Dynamics Cfd

Strut is used in vertical axis wind turbine (VAWT) to restraint the framework. In this study, struts are analyzed to show the pressure losses in VAWT. ANSYS computational fluid dynamics (CFD) software is used to investigate triangle strut in VAWT. This study aims to show a CFD simulation of struts, which affects the aerodynamic of VAWT. In CFD software, the aerodynamic of VAWT can be analyzed in terms of pressure losses in the struts. The simulation method starts by making a struts model, then meshing and setting up ANSYS's boundary conditions. The last iteration runs in ANSYS until convergence. Our results show the percentage of pressure losses with the variation of the angle of wind 0°, 20°, 40°, and 60° are 0.67 %, 0.52 %, 0.48 %, and 0.52 %. The effect of triangle strut in VAWT did not affect the wind flow to the VAWT blade. The results also indicated that the triangle strut could be applied in the multi-stage of VAWT system.

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Vertical-Axis Wind Turbine Blade-Shape Optimization Using a Genetic Algorithm and Direct-Forcing Immersed Boundary Method

Journal of Energy Engineering ◽

10.1061/(asce)ey.1943-7897.0000741 ◽

2021 ◽

Vol 147 (2) ◽

pp. 04020091

Author(s):

Ming-Jyh Chern ◽

Desta Goytom Tewolde ◽

Chao-Ching Kao ◽

Nima Vaziri

Keyword(s):

Genetic Algorithm ◽

Shape Optimization ◽

Wind Turbine ◽

Turbine Blade ◽

Immersed Boundary Method ◽

Vertical Axis ◽

Immersed Boundary ◽

Vertical Axis Wind Turbine ◽

Blade Shape ◽

Direct Forcing

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Calculating the aerodynamics of vertical axis wind turbines

Vietnam Journal of Mechanics ◽

10.15625/0866-7136/34/3/2358 ◽

2012 ◽

Vol 34 (3) ◽

pp. 169-184 ◽

Cited By ~ 1

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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