Performance assessment and optimization of a helical Savonius wind turbine by modifying the Bach’s section
| Autor: | Mohsen Pourfallah, M. Gholinia, M. Niyat Zadeh, S. Safari Sabet, A. Taheri Ahangar, Saeed Mouloodi |
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| Rok vydání: | 2021 |
| Předmět: |
Technology
0209 industrial biotechnology Maximum power principle Science 020209 energy General Chemical Engineering Bach’s developed model Power and torque coefficient General Physics and Astronomy 02 engineering and technology Turbine Flow separation 020901 industrial engineering & automation 0202 electrical engineering electronic engineering information engineering Bach’s primary model General Materials Science General Environmental Science Mathematics Tip-speed ratio Wind power Computer simulation business.industry Turbulence General Engineering Savonius wind turbine General Earth and Planetary Sciences business Helical Savonius Marine engineering |
| Zdroj: | SN Applied Sciences, Vol 3, Iss 8, Pp 1-11 (2021) |
| ISSN: | 2523-3971 2523-3963 |
| DOI: | 10.1007/s42452-021-04731-0 |
| Popis: | In this paper, we attempted to measure the effect of Bach’s section, which presents a high-power coefficient in the standard Savonius model, on the performance of the helical Savonius wind turbine, by observing the parameters affecting turbine performance. Assessment methods based on the tip speed ratio, torque variation, flow field characterizations, and the power coefficient are performed. The present issue was stimulated using the turbulence model SST (k- ω) at 6, 8, and 10 m/s wind flow velocities via COMSOL software. Numerical simulation was validated employing previous articles. Outputs demonstrate that Bach-primary and Bach-developed wind turbine models have less flow separation at the spoke-end than the simple helical Savonius model, ultimately improving wind turbines’ total performance and reducing spoke-dynamic loads. Compared with the basic model, the Bach-developed model shows an 18.3% performance improvement in the maximum power coefficient. Bach’s primary model also offers a 12.4% increase in power production than the initial model’s best performance. Furthermore, the results indicate that changing the geometric parameters of the Bach model at high velocities (in turbulent flows) does not significantly affect improving performance. |
| Databáze: | OpenAIRE |
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