Aerodynamic Performance of Vertical-Axis Wind Turbines
The nonstationary separated incompressible flows around Darrieus and Savonius rotors of vertical-axis wind turbines were investigated through computational simulation using the Reynolds averaged Navier–Stokes equations and Spalart–Allmaras turbulence model. The implicit finite-volume algorithm, the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-07-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/11/7/1367 |
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| author | Dmytro Redchyts Koldo Portal-Porras Serhii Tarasov Svitlana Moiseienko Uliana Tuchyna Natalya Starun Unai Fernandez-Gamiz |
| author_facet | Dmytro Redchyts Koldo Portal-Porras Serhii Tarasov Svitlana Moiseienko Uliana Tuchyna Natalya Starun Unai Fernandez-Gamiz |
| author_sort | Dmytro Redchyts |
| collection | DOAJ |
| description | The nonstationary separated incompressible flows around Darrieus and Savonius rotors of vertical-axis wind turbines were investigated through computational simulation using the Reynolds averaged Navier–Stokes equations and Spalart–Allmaras turbulence model. The implicit finite-volume algorithm, the basis of which was artificial compressibility method, was chosen to obtain the numerical solution. The series of computational and physical experiments for Darrieus rotors with varied numbers and shapes of blades were performed. The detailed visualization of the flow was presented. The turbulent flows surrounding the Darrieus and Savonius rotors were studied, and as a part of these investigations, the major phases of vortex progress were identified. For this purpose, three series of computer tests on the aerodynamic and power properties of Savonius rotors with two and three buckets were performed, and their results are also presented. The influence of tip-speed ratio, solidity, and Reynolds numbers on the power coefficients of the Darrieus and Savonius rotors was investigated. It has been demonstrated that increasing Reynolds number from 10<sup>4</sup> to 10<sup>6</sup> causes a rise in Darrieus rotors power coefficient from 0.15 up to 0.5. The maximum values of power coefficient are moved away from higher values of tip-speed ratio from 2 to 5 as a result of a decrease in Darrieus rotor solidity from 1.0 to 0.33. The greatest power coefficient for a Savonius rotor with two blades is 0.23 and for a Savonius rotor with three blades is 0.19. |
| first_indexed | 2024-03-11T00:56:40Z |
| format | Article |
| id | doaj.art-5bc6ebcecbd04968be06961d5400aef7 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-11T00:56:40Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-5bc6ebcecbd04968be06961d5400aef72023-11-18T19:59:13ZengMDPI AGJournal of Marine Science and Engineering2077-13122023-07-01117136710.3390/jmse11071367Aerodynamic Performance of Vertical-Axis Wind TurbinesDmytro Redchyts0Koldo Portal-Porras1Serhii Tarasov2Svitlana Moiseienko3Uliana Tuchyna4Natalya Starun5Unai Fernandez-Gamiz6Institute of Transport Systems and Technologies, National Academy of Sciences of Ukraine, 49005 Dnipro, UkraineNuclear Engineering and Fluid Mechanics Department, University of the Basque Country, UPV/EHU, 01006 Vitoria-Gasteiz, SpainInstitute of Transport Systems and Technologies, National Academy of Sciences of Ukraine, 49005 Dnipro, UkraineSection of Higher Mathematics and Mathematical Modeling, Department of General Humanities and Natural Sciences, Kherson National Technical University, 73008 Kherson, UkraineInstitute of Transport Systems and Technologies, National Academy of Sciences of Ukraine, 49005 Dnipro, UkraineSection of Higher Mathematics and Mathematical Modeling, Department of General Humanities and Natural Sciences, Kherson National Technical University, 73008 Kherson, UkraineNuclear Engineering and Fluid Mechanics Department, University of the Basque Country, UPV/EHU, 01006 Vitoria-Gasteiz, SpainThe nonstationary separated incompressible flows around Darrieus and Savonius rotors of vertical-axis wind turbines were investigated through computational simulation using the Reynolds averaged Navier–Stokes equations and Spalart–Allmaras turbulence model. The implicit finite-volume algorithm, the basis of which was artificial compressibility method, was chosen to obtain the numerical solution. The series of computational and physical experiments for Darrieus rotors with varied numbers and shapes of blades were performed. The detailed visualization of the flow was presented. The turbulent flows surrounding the Darrieus and Savonius rotors were studied, and as a part of these investigations, the major phases of vortex progress were identified. For this purpose, three series of computer tests on the aerodynamic and power properties of Savonius rotors with two and three buckets were performed, and their results are also presented. The influence of tip-speed ratio, solidity, and Reynolds numbers on the power coefficients of the Darrieus and Savonius rotors was investigated. It has been demonstrated that increasing Reynolds number from 10<sup>4</sup> to 10<sup>6</sup> causes a rise in Darrieus rotors power coefficient from 0.15 up to 0.5. The maximum values of power coefficient are moved away from higher values of tip-speed ratio from 2 to 5 as a result of a decrease in Darrieus rotor solidity from 1.0 to 0.33. The greatest power coefficient for a Savonius rotor with two blades is 0.23 and for a Savonius rotor with three blades is 0.19.https://www.mdpi.com/2077-1312/11/7/1367vertical-axis wind turbineRANSCFDaerodynamics |
| spellingShingle | Dmytro Redchyts Koldo Portal-Porras Serhii Tarasov Svitlana Moiseienko Uliana Tuchyna Natalya Starun Unai Fernandez-Gamiz Aerodynamic Performance of Vertical-Axis Wind Turbines Journal of Marine Science and Engineering vertical-axis wind turbine RANS CFD aerodynamics |
| title | Aerodynamic Performance of Vertical-Axis Wind Turbines |
| title_full | Aerodynamic Performance of Vertical-Axis Wind Turbines |
| title_fullStr | Aerodynamic Performance of Vertical-Axis Wind Turbines |
| title_full_unstemmed | Aerodynamic Performance of Vertical-Axis Wind Turbines |
| title_short | Aerodynamic Performance of Vertical-Axis Wind Turbines |
| title_sort | aerodynamic performance of vertical axis wind turbines |
| topic | vertical-axis wind turbine RANS CFD aerodynamics |
| url | https://www.mdpi.com/2077-1312/11/7/1367 |
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