International Journal of Energy Science and Engineering
Articles Information
International Journal of Energy Science and Engineering, Vol.1, No.3, Jul. 2015, Pub. Date: Jun. 24, 2015
Numerical Investigation of Double Stack Blade Savonius Wind Turbine
Pages: 106-114 Views: 1969 Downloads: 1132
[01] Jaber Hosseinzadeh Gervi, Department of Mechanical Engineering Babol Noshirvani, University of Technology, Babol, Iran.
[02] Mojtaba Aghajani Delavar, Department of Mechanical Engineering Babol Noshirvani, University of Technology, Babol, Iran.
[03] Korosh Sedighi, Department of Mechanical Engineering Babol Noshirvani, University of Technology, Babol, Iran.
Generating energy from wind as a renewable energy resource has always been a growing field of study. This article analyzes the aerodynamics of Savonius wind turbine with vertical axis. Blades with multi stacks can give rise to blade efficiency. For this purpose, different models of blades were suggested and the impact of blade intervals on the torque output has been studied. Moreover, the flow of fluid around the turbine rotor has been calculated with the CFD method and the standard k-ε turbulence model is used. The simulations were performed at four different wind velocities of 3, 4, 5, and 6 m/s. The rotor torque is analyzed with different rotor angles from 0 to 360 degrees with 30° pitches. The results clearly show that the torque output increases as the intervals between the blade stacks decrease. Also this paper, for the first time, shows that as the thickness of the outer blade’s slot increases, the torque will decrease.
Savonius Rotor, Computational Fluid Dynamics, Double Stacks Blade, Torque
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