Enhanced Aerodynamic Performance of Savonius Wind Turbines Through Blade Design Modifications: A CFD Study
ABSTRACT The conventional Savonius wind turbine's power coefficient is comparatively low, which limits its efficiency. Because the power coefficient depends significantly on the blade design, this study investigates the potential of improving the turbine performance by modifying the rotor blade...
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| Format: | Article |
| Language: | English |
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Wiley
2025-08-01
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| Series: | Wind Energy |
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| Online Access: | https://doi.org/10.1002/we.70042 |
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| author | Shihab Shahriare Mrinmoy Roy Rony Prasanjit Das |
| author_facet | Shihab Shahriare Mrinmoy Roy Rony Prasanjit Das |
| author_sort | Shihab Shahriare |
| collection | DOAJ |
| description | ABSTRACT The conventional Savonius wind turbine's power coefficient is comparatively low, which limits its efficiency. Because the power coefficient depends significantly on the blade design, this study investigates the potential of improving the turbine performance by modifying the rotor blade designs. Two modified models are proposed, which are investigated numerically using CFD methods in ANSYS Fluent. Improving the efficiency of Savonius turbines could offer substantial benefits for energy generation, given the significance of wind energy in pursuing renewable energy solutions. The shear stress transport (SST) k‐omega model, which allows a detailed analysis of the turbine's aerodynamic performance, is utilized here under transient conditions. At different tip speed ratios (TSRs), the torque coefficient and power coefficients are calculated. Additionally, the flow structure around the rotor is evaluated. The study demonstrates the impact of rotor blade design on power and torque coefficients, revealing that at a TSR of 1, the modified models demonstrated better performance than the base conventional model, with increases of power coefficient by 9.37% and 12.5%. These results suggest that better blade designs have the potential to greatly improve Savonius wind turbine performance and increase their efficiency for real‐world applications. |
| format | Article |
| id | doaj-art-b9108cd6700b4756939ba6eeafccabe0 |
| institution | DOAJ |
| issn | 1095-4244 1099-1824 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Wind Energy |
| spelling | doaj-art-b9108cd6700b4756939ba6eeafccabe02025-08-20T02:48:16ZengWileyWind Energy1095-42441099-18242025-08-01288n/an/a10.1002/we.70042Enhanced Aerodynamic Performance of Savonius Wind Turbines Through Blade Design Modifications: A CFD StudyShihab Shahriare0Mrinmoy Roy Rony1Prasanjit Das2Department of Mechanical Engineering Chittagong University of Engineering and Technology Chattogram BangladeshDepartment of Mechanical Engineering Chittagong University of Engineering and Technology Chattogram BangladeshDepartment of Mechanical Engineering Chittagong University of Engineering and Technology Chattogram BangladeshABSTRACT The conventional Savonius wind turbine's power coefficient is comparatively low, which limits its efficiency. Because the power coefficient depends significantly on the blade design, this study investigates the potential of improving the turbine performance by modifying the rotor blade designs. Two modified models are proposed, which are investigated numerically using CFD methods in ANSYS Fluent. Improving the efficiency of Savonius turbines could offer substantial benefits for energy generation, given the significance of wind energy in pursuing renewable energy solutions. The shear stress transport (SST) k‐omega model, which allows a detailed analysis of the turbine's aerodynamic performance, is utilized here under transient conditions. At different tip speed ratios (TSRs), the torque coefficient and power coefficients are calculated. Additionally, the flow structure around the rotor is evaluated. The study demonstrates the impact of rotor blade design on power and torque coefficients, revealing that at a TSR of 1, the modified models demonstrated better performance than the base conventional model, with increases of power coefficient by 9.37% and 12.5%. These results suggest that better blade designs have the potential to greatly improve Savonius wind turbine performance and increase their efficiency for real‐world applications.https://doi.org/10.1002/we.70042CFDpower coefficientSavonius VAWTtorque coefficientTSR |
| spellingShingle | Shihab Shahriare Mrinmoy Roy Rony Prasanjit Das Enhanced Aerodynamic Performance of Savonius Wind Turbines Through Blade Design Modifications: A CFD Study Wind Energy CFD power coefficient Savonius VAWT torque coefficient TSR |
| title | Enhanced Aerodynamic Performance of Savonius Wind Turbines Through Blade Design Modifications: A CFD Study |
| title_full | Enhanced Aerodynamic Performance of Savonius Wind Turbines Through Blade Design Modifications: A CFD Study |
| title_fullStr | Enhanced Aerodynamic Performance of Savonius Wind Turbines Through Blade Design Modifications: A CFD Study |
| title_full_unstemmed | Enhanced Aerodynamic Performance of Savonius Wind Turbines Through Blade Design Modifications: A CFD Study |
| title_short | Enhanced Aerodynamic Performance of Savonius Wind Turbines Through Blade Design Modifications: A CFD Study |
| title_sort | enhanced aerodynamic performance of savonius wind turbines through blade design modifications a cfd study |
| topic | CFD power coefficient Savonius VAWT torque coefficient TSR |
| url | https://doi.org/10.1002/we.70042 |
| work_keys_str_mv | AT shihabshahriare enhancedaerodynamicperformanceofsavoniuswindturbinesthroughbladedesignmodificationsacfdstudy AT mrinmoyroyrony enhancedaerodynamicperformanceofsavoniuswindturbinesthroughbladedesignmodificationsacfdstudy AT prasanjitdas enhancedaerodynamicperformanceofsavoniuswindturbinesthroughbladedesignmodificationsacfdstudy |