Evaluation of a Savonius Wind Turbine in the Vicinity of a Circular Cross-sectional Building

Document Type : Research Article

Authors

1 Faculty of Mechanical Engineering, Urmia University of Technology, Urmia, Iran

2 Assistant Professor/Department Of Mechanical Engineering/ Urmia University of Technology, Urmia, Iran

Abstract

Today's big cities are full of tall buildings requiring a lot of energy. On the other hand, dispersed electricity generation is an integral part of these cities in developed countries. To use small-scale wind turbines and dispersed electricity generation, the performance of such turbines in the vicinity of various buildings in the urban environment should be investigated. In this study, the power characteristics of a conventional Savonius wind turbine in the vicinity of a large circular cross-sectional building are assessed under a free-wind speed of 6 m/s. To this, the Savonius rotors are installed at a constant non-dimensional distance of 2 from the building envelope at different installation angles of 30°, 45°, 60°, and 90°. Additionally, to understand the effects of the rotation direction of the rotor, two possible rotations, namely, inward and outward rotations are studied. Computations are performed for tip speed ratios of 0.4, 0.8, and 1.2. The obtained results reveal the significant impacts of installation angle and rotation scenario. Examination of the obtained data shows that, depending on the for tip speed ratio, with inward rotation of the rotor at installation angles of 60° and 90°, the maximum improvements in the power coefficient are found compared to the reference case.

Keywords

Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 55, Issue 11
February 2024
Pages 1373-1394

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