Performance and Aerodynamic Attitude of KIONAS, a New Configuration of a Vertical Axis Wind Turbine

Douvi, Eleni C.; Douvi, Dimitra C.; Margaris, Dionissios P.; Drosis, Ioannis E.
May 2016
International Review of Mechanical Engineering;May2016, Vol. 10 Issue 3, p157
Academic Journal
The aim of this work is to show the performance and the aerodynamic attitude of KIONAS, a new configuration of a vertical axis wind turbine. KIONAS has a stator over the rotor and the special feature that is able to consist of several stages. The stator is shaped in such a way to increase the velocity of the air which impacts the rotor blades and the performance of each stage increases with the increase of number of stages. The effects of wind velocity, the various numbers of blades of the rotor, the inclination of these blades, the rotor diameter, the stator's shape and the number of stages on the performance on the vertical axis wind turbine were studied. A h ORTRAN code was developed to solve the equations of continuity and momentum in order to predict the power on several cases. A commercial Computational Fluid Dynamics code was used to gain further knowledge on the flow field. It was concluded that for higher wind velocities and greater number of blades, more power is produced. The performance was found to be higher for a stator with curved guide vanes and for KIONAS configuration with more stages.


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