New Methodology to Study Unsteady Wind on Aerodynamic Performance of Vertical Axis Wind Turbines

2020 ◽  
Author(s):  
Mohammad Jafari ◽  
Alireza Razavi ◽  
Mostafa Hassanalian
Keyword(s):  
Wind Turbines ◽  
Vertical Axis ◽  
Aerodynamic Performance ◽  
Vertical Axis Wind Turbines

113 Improvement of Aerodynamic Performance for Vertical Axis Wind Turbines

2018 ◽  
Vol 2018.53 (0) ◽  
pp. 25-26
Author(s):  
Norihito OTSUKA ◽  
Yu NISHIO ◽  
Seiichiro IZAWA ◽  
Yu FUKUNISHI
Keyword(s):  
Wind Turbines ◽  
Vertical Axis ◽  
Aerodynamic Performance ◽  
Vertical Axis Wind Turbines

The Aerodynamic Performance of Offshore Twin Vertical Axis Wind Turbines With Deflector

2019 ◽  
Author(s):  
Yichen Jiang ◽  
Peidong Zhao ◽  
Li Zou ◽  
Guiyong Zhang ◽  
Zhi Zong
Keyword(s):  
Wind Turbines ◽  
Dynamic Method ◽  
Fluid Dynamic ◽  
Angle Of Attack ◽  
Vertical Axis ◽  
Aerodynamic Performance ◽  
Vertical Axis Wind Turbines ◽  
Simulation Results ◽  
Novel Design ◽  
Local Angle

Abstract A novel design of offshore twin counter-rotating vertical axis wind turbines (VAWTs) with deflector is proposed in this paper. We investigate the performance of the twin VAWTs by the two-dimensional computational fluid dynamic method with the Spalart-Allmaras turbulence model. Then, the performances of twin VAWTs with three kinds of deflectors are compared. The results show that installing the front deflector leads to significant improved aerodynamic performance. To better understand the simulation results, we introduce a simple and effective method to obtain the blade’s angle of attack. The mechanism of enhanced performance by deflector is pointed out, based on the information of the blade’s local angle of attack and flow field. Finally, a guideline on the design of deflector for the twin vertical axis wind turbines is provided.

scholarly journals Effect of the shaft on the aerodynamic performance of urban vertical axis wind turbines

2017 ◽  
Vol 149 ◽  
pp. 616-630 ◽  
Author(s):  
Abdolrahim Rezaeiha ◽  
Ivo Kalkman ◽  
Hamid Montazeri ◽  
Bert Blocken
Keyword(s):  
Wind Turbines ◽  
Vertical Axis ◽  
Aerodynamic Performance ◽  
Vertical Axis Wind Turbines
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