Numerical Evaluation of the Flow around a New Vertical Axis Wind Turbine Concept

Ion Malael and Ioana Octavia Bucur
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Ion Malael: Romanian Research and Development Institute for Gas Turbines COMOTI, 220D Iuliu Maniu Bd., 061126 Bucharest, Romania
Ioana Octavia Bucur: Romanian Research and Development Institute for Gas Turbines COMOTI, 220D Iuliu Maniu Bd., 061126 Bucharest, Romania

Sustainability, 2021, vol. 13, issue 16, 1-17

Abstract: In order to develop a sustainable economy based on the efficient use of green energy resources, it is necessary to research and innovate systems such as wind turbines. In this paper, a new configuration for vertical axis wind turbines was proposed and numerically analyzed using CFD methods. The concept is based on solving the starting problem of lift-based vertical axis wind turbines. The new concept consists of three blades with different chords, arranged at different radii so that the interaction between the blades is reduced and the operation in the vortex wake is minimal, thus reducing the losses. Through comparing a classic case of an H-Darrieus wind turbine with the new concept, not only were satisfying results regarding the blade-to-blade interaction presented, but an increased efficiency of up to 10% was also observed. Among the presented results is the variation of the vorticity magnitude at different positions of the blades, thus, the concept’s blade-to-blade interaction is reduced. Conclusions drawn after the investigation are in favor of the proposed geometry and the concept should be pursued further.

Keywords: vertical axis wind turbine; computational fluid dynamics; tip speed ratio; torque coefficient; blade-to-blade interaction (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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