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Computation 2017, 5(1), 8; doi:10.3390/computation5010008

Numerical and Computational Analysis of a New Vertical Axis Wind Turbine, Named KIONAS

1
Fluid Mechanics Laboratory (FML), Mechanical Engineering and Aeronautics Department, University of Patras, GR-26500 Patras, Greece
2
Small Wind Turbines Development Manager, 97 Dimitros Street, GR-19200 Elefsina, Greece
*
Authors to whom correspondence should be addressed.
Academic Editor: Demos T. Tsahalis
Received: 12 December 2016 / Revised: 3 January 2017 / Accepted: 5 January 2017 / Published: 11 January 2017
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Abstract

This paper concentrates on a new configuration for a wind turbine, named KIONAS. The main purpose is to determine the performance and aerodynamic behavior of KIONAS, which is a vertical axis wind turbine with a stator over the rotor and a special feature in that it can consist of several stages. Notably, the stator is shaped in such a way that it increases the velocity of the air impacting the rotor blades. Moreover, each stage’s performance can be increased with the increase of the total number of stages. The effects of wind velocity, the various numbers of inclined rotor blades, the rotor diameter, the stator’s shape and the number of stages on the performance of KIONAS were studied. A FORTRAN code was developed in order to predict the power in several cases by solving the equations of continuity and momentum. Subsequently, further knowledge on the flow field was obtained by using a commercial Computational Fluid Dynamics code. Based on the results, it can be concluded that higher wind velocities and a greater number of blades produce more power. Furthermore, higher performance was found for a stator with curved guide vanes and for a KIONAS configuration with more stages. View Full-Text
Keywords: vertical axis wind turbine; stator guide vanes; aerodynamic performance; power output; multi-stage vertical axis wind turbine; stator guide vanes; aerodynamic performance; power output; multi-stage
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Douvi, E.; Douvi, D.; Margaris, D.; Drosis, I. Numerical and Computational Analysis of a New Vertical Axis Wind Turbine, Named KIONAS. Computation 2017, 5, 8.

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