2-D-CFD Analysis of the Effect of Trailing Edge Shape on the Performance of a Straight-Blade Vertical Axis Wind Turbine

2015 ◽  
Vol 6 (1) ◽  
pp. 228-235 ◽  
Author(s):  
Khaled M. Almohammadi ◽  
Derek B. Ingham ◽  
Lin Ma ◽  
Mohamed Pourkashanian
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Cfd Analysis ◽  
Vertical Axis Wind Turbine ◽  
Trailing Edge ◽  
Straight Blade

Modeling dynamic stall of a straight blade vertical axis wind turbine

2015 ◽  
Vol 57 ◽  
pp. 144-158 ◽  
Author(s):  
K.M. Almohammadi ◽  
D.B. Ingham ◽  
L. Ma ◽  
M. Pourkashanian
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Dynamic Stall ◽  
Vertical Axis Wind Turbine ◽  
Straight Blade

Effect of trailing edge dual synthesis jets actuator on aerodynamic characteristics of a straight-bladed vertical axis wind turbine

Energy ◽  
2022 ◽  
Vol 238 ◽  
pp. 121792
Author(s):  
Peilin Wang ◽  
Qingsong Liu ◽  
Chun Li ◽  
Weipao Miao ◽  
Shuai Luo ◽  
...  
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Aerodynamic Characteristics ◽  
Vertical Axis Wind Turbine ◽  
Trailing Edge

Vortex Analytical Model of a Circulation Controlled Vertical Axis Wind Turbine

2009 ◽  
Author(s):  
Jay P. Wilhelm ◽  
Chad C. Panther ◽  
Franz A. Pertl ◽  
James E. Smith
Keyword(s):  
Wind Turbine ◽  
Analytical Model ◽  
Vertical Axis ◽  
Circulation Control ◽  
Vertical Axis Wind Turbine ◽  
Trailing Edge ◽  
Vortex Interactions ◽  
Vortex Model ◽  
Aspect Ratios ◽  
Start Up

A possible method for modeling a Circulation Controlled - Vertical Axis Wind Turbine (CC-VAWT) is a vortex model, based upon the circulation of a turbine blade. A vortex model works by continuously calculating the circulation strength and location of both free and blade vortices which are shed during rotation. The vortices’ circulation strength and location can then be used to compute a velocity at any point in or around the area of the wind turbine. This model can incorporate blade wake interactions, unsteady flow conditions, and finite aspect ratios. Blade vortex interactions can also be studied by this model to assist designers in the avoidance of adverse turbulent operational regions. Conventional vertical axis wind turbine power production is rated to produce power in an operating wind speed envelope. These turbines, unless designed specifically for low speed operation require rotational start-up assistance. The VAWT blade can be augmented to include circulation control capabilities. Circulation control can prolong the trailing edge separation and can be implemented by using blowing slots located adjacent to a rounded trailing edge surface; the rounded surface of the enhanced blade replaces the sharp trailing edge of a conventional airfoil. Blowing slots of the CC-VAWT blade are located on the top and bottom trailing edges and are site-controlled in multiple sections along the span of the blade. Improvements in the amount of power developed at lower speeds and the elimination or reduction of start-up assistance could be possible with a CC-VAWT. In order to design for a wider speed operating range that takes advantage of circulation control, an analytical model of a CC-VAWT would be helpful. The primary function of the model is to calculate the aerodynamic forces experienced by the CC-VAWT blade during various modes of operation, ultimately leading to performance predictions based on power generation. The model will also serve as a flow visualization tool to gain a better understanding of the effects of circulation control on the development and interactions of vortices within the wake region of the CC-VAWT. This paper will describe the development of a vortex analytical model of a CC-VAWT.

OS0204 Performance calculation of vertical axis wind turbine with straight blade for air-bone wind turbine

2016 ◽  
Vol 2016.22 (0) ◽  
pp. _OS0204-1_-_OS0204-2_
Author(s):  
Yusuke MARUYAMA ◽  
Hironori A. FUJII ◽  
Hiroki T ENDO ◽  
Kazuichi SEKI ◽  
Masahiro MATSUI
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbine ◽  
Straight Blade ◽  
Performance Calculation

Comparative CFD analysis of Vertical Axis Wind Turbine in upright and tilted configuration

2016 ◽  
Vol 85 ◽  
pp. 327-337 ◽  
Author(s):  
Abdullah Mobin Chowdhury ◽  
Hiromichi Akimoto ◽  
Yutaka Hara
Keyword(s):  
Wind Turbine ◽  
Vertical Axis ◽  
Cfd Analysis ◽  
Vertical Axis Wind Turbine
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