S0503-4-2 Numerical analysis for performance evaluation of a Straight Wings Vertical-Axis Wind Turbine

A numerical analysis of a rooftop vertical axis wind turbine (VAWT) for applications in urban area is presented. The numerical simulations were developed to study the flow field through the turbine rotor to analyze the aerodynamic performance characteristics of the device. Three different blade numbers of wind turbine are studied, 2, 3 and 4, respectively. Each one of the models was built in a 3D computational model. The effects generated in the performance of turbines by the numbers of blades are considered. A Sliding Mesh Model (SMM) capability was used to present the dimensionless form of coefficient power and coefficient moment of the wind turbine as a function of the wind velocity and the rotor rotational speed. The numerical study was developed in CFD using FLUENT®. The results show the aerodynamic performance for each configuration of wind turbine rotor. In the cases of Rooftop rotor the power coefficient increases as the blade number increases, while in the case of Savonius rotor the power coefficient decrease as the blades number increases.

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OS2-11 Numerical Analysis for the Wind Tunnel Experiments of Vertical Axis Wind Turbine

The Proceedings of the National Symposium on Power and Energy Systems ◽

10.1299/jsmepes.2005.10.75 ◽

2005 ◽

Vol 2005.10 (0) ◽

pp. 75-78

Author(s):

Katsuya ISHIMATSU ◽

Kazuyuki KAGE ◽

Toyoyasu OKUBAYASHI ◽

Hiroya SANO

Keyword(s):

Numerical Analysis ◽

Wind Tunnel ◽

Wind Turbine ◽

Vertical Axis ◽

Vertical Axis Wind Turbine ◽

Wind Tunnel Experiments

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A numerical analysis of unsteady inflow wind for site specific vertical axis wind turbine: A case study for Marsabit and Garissa in Kenya

Renewable Energy ◽

10.1016/j.renene.2014.11.074 ◽

2015 ◽

Vol 76 ◽

pp. 648-661 ◽

Cited By ~ 40

Author(s):

David Wafula Wekesa ◽

Cong Wang ◽

Yingjie Wei ◽

Joseph N. Kamau ◽

Louis Angelo M. Danao

Keyword(s):

Numerical Analysis ◽

Wind Turbine ◽

Vertical Axis ◽

Vertical Axis Wind Turbine ◽

Site Specific ◽

Unsteady Inflow

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Application of artificial neural network for performance evaluation of vertical axis wind turbine rotor

International Journal of Ambient Energy ◽

10.1080/01430750.2014.915889 ◽

2014 ◽

Vol 37 (2) ◽

pp. 209-218 ◽

Cited By ~ 4

Author(s):

A. Biswas ◽

S. Sarkar ◽

R. Gupta

Keyword(s):

Neural Network ◽

Artificial Neural Network ◽

Performance Evaluation ◽

Wind Turbine ◽

Vertical Axis ◽

Turbine Rotor ◽

Vertical Axis Wind Turbine ◽

Artificial Neural ◽

Wind Turbine Rotor

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

Journal of Energy Resources Technology ◽

10.1115/1.4042643 ◽

2019 ◽

Vol 141 (5) ◽

Cited By ~ 10

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.

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