Developed DMST model for performance analysis and parametric evaluation of Gorlov vertical axis wind turbines

2020 ◽  
Vol 37 ◽  
pp. 100616 ◽  
Author(s):  
Mahdi Moghimi ◽  
Hadi Motawej
Keyword(s):  
Performance Analysis ◽  
Wind Turbines ◽  
Vertical Axis ◽  
Vertical Axis Wind Turbines

scholarly journals CFD-based Performance Analysis on Design Factors of Vertical Axis Wind Turbines at Low Wind Speeds

2017 ◽  
Vol 138 ◽  
pp. 500-505 ◽  
Author(s):  
Chaianant Sranpat ◽  
Suchaya Unsakul ◽  
Premchai Choljararux ◽  
Thananchai Leephakpreeda
Keyword(s):  
Performance Analysis ◽  
Wind Turbines ◽  
Vertical Axis ◽  
Wind Speeds ◽  
Vertical Axis Wind Turbines ◽  
Low Wind Speeds ◽  
Design Factors

scholarly journals Numerical Analysis of the Dynamic Interaction between Two Closely Spaced Vertical-Axis Wind Turbines

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2286
Author(s):  
Yutaka Hara ◽  
Yoshifumi Jodai ◽  
Tomoyuki Okinaga ◽  
Masaru Furukawa
Keyword(s):  
Wind Turbines ◽  
Power Distribution ◽  
Phase Synchronization ◽  
Average Power ◽  
Vertical Axis ◽  
Turbine Rotor ◽  
Mean Power ◽  
Vertical Axis Wind Turbines ◽  
Fluid Body ◽  
First Time

To investigate the optimum layouts of small vertical-axis wind turbines, a two-dimensional analysis of dynamic fluid body interaction is performed via computational fluid dynamics for a rotor pair in various configurations. The rotational speed of each turbine rotor (diameter: D = 50 mm) varies based on the equation of motion. First, the dependence of rotor performance on the gap distance (gap) between two rotors is investigated. For parallel layouts, counter-down (CD) layouts with blades moving downwind in the gap region yield a higher mean power than counter-up (CU) layouts with blades moving upwind in the gap region. CD layouts with gap/D = 0.5–1.0 yield a maximum average power that is 23% higher than that of an isolated single rotor. Assuming isotropic bidirectional wind speed, co-rotating (CO) layouts with the same rotational direction are superior to the combination of CD and CU layouts regardless of the gap distance. For tandem layouts, the inverse-rotation (IR) configuration shows an earlier wake recovery than the CO configuration. For 16-wind-direction layouts, both the IR and CO configurations indicate similar power distribution at gap/D = 2.0. For the first time, this study demonstrates the phase synchronization of two rotors via numerical simulation.

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