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research-article

Development of the Dual Vertical Axis Wind Turbine Using CFD

[+] Author and Article Information
Gabriel Naccache

Department of Mechanical and Industrial Engineering, Concordia University - Sir George Williams Campus, 1515 Ste-Catherine Street West, Montreal, QC, Canada H3G 2W1
gabriel_naccache@hotmail.com

Marius Paraschivoiu

Department of Mechanical and Industrial Engineering, Concordia University - Sir George Williams Campus, 1515 Ste-Catherine Street West, Montreal, QC, Canada H3G 2W1
marius.paraschivoiu@concordia.ca

1Corresponding author.

ASME doi:10.1115/1.4037490 History: Received June 07, 2016; Revised July 16, 2017

Abstract

Small Vertical Axis Wind Turbines (VAWTs) are good candidates to extract energy from wind in urban areas because they are easy to install, service and do not generate much noise; however, the efficiency of small turbines is low. Here-in a new turbine, with high efficiency, is proposed. The novel design is based on the classical H-Darrieus VAWT. VAWTs produce the highest power when the blade chord is perpendicular to the incoming wind direction. The basic idea behind the proposed turbine is to extend that said region of maximum power by having the blades continue straight instead of following a circular path. This motion can be performed if the blades turn along two axes; hence it was named Dual Vertical Axis Wind Turbine (D-VAWT). The analysis of this new turbine is done through the use of Computational Fluid Dynamics (CFD) with 2D and 3D simulations. While 2D is used to validate the methodology, 3D is used to get an accurate estimate of the turbine performance. The analysis of a single blade is performed and the turbine shows that a power coefficient of 0.4 can be achieved. So far, reaching performance levels high enough to compete with the most efficient VAWTs. The D-VAWT is still far from full optimization, but the analysis presented here shows the hidden potential and serves as proof of concept.

Copyright (c) 2017 by ASME
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