Computational Flow Analysis on a Real Scale Run-of-River Archimedes Screw Turbine with a High Incline Angle
The Archimedes screw turbine (AST) is the most sustainable mini-hydropower extraction method that offers number of economic, social, and environmental advantages. Nowadays, many researchers are interested in AST development as it is considered a new technology. Currently, a lot of researchers are co...
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| Format: | Article |
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MDPI AG
2021-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/11/3307 |
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| author | Dylan Sheneth Edirisinghe Ho-Seong Yang Min-Sung Kim Byung-Ha Kim Sudath Prasanna Gunawardane Young-Ho Lee |
| author_facet | Dylan Sheneth Edirisinghe Ho-Seong Yang Min-Sung Kim Byung-Ha Kim Sudath Prasanna Gunawardane Young-Ho Lee |
| author_sort | Dylan Sheneth Edirisinghe |
| collection | DOAJ |
| description | The Archimedes screw turbine (AST) is the most sustainable mini-hydropower extraction method that offers number of economic, social, and environmental advantages. Nowadays, many researchers are interested in AST development as it is considered a new technology. Currently, a lot of researchers are conducting experimental testing of the screws, comparing their reliability with computational fluid dynamic (CFD) analyses. Almost all of them are lab-scale testing models that claiming an average 80% efficiency for low pitch angles. In the case of a real site with a small inclination angle, the length of the screw is large enough to cause severe problems, specially related to bending of the screw. Therefore, this research was conducted to analyze the CFD flow field in a real site-scale AST with the maximum possible inclination of 45 degrees. In addition, the design was done without the upper and lower reservoir as it was conceived as a run-of-river flow system. The simulated real scale AST result showed a maximum efficiency of around 82% for a 5.2 m hydraulic head and 0.232 m<sup>3</sup>/s discharge. Many researchers claim above 80% efficiency for low inclination angle ASTs with reservoirs. This CFD study indicates that even higher inclination angle ASTs can achieve 80% efficiency in run-of-river; real-scale applications. |
| first_indexed | 2024-03-10T10:41:35Z |
| format | Article |
| id | doaj.art-072b29984354458aafb48f886568fec2 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T10:41:35Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-072b29984354458aafb48f886568fec22023-11-21T22:51:47ZengMDPI AGEnergies1996-10732021-06-011411330710.3390/en14113307Computational Flow Analysis on a Real Scale Run-of-River Archimedes Screw Turbine with a High Incline AngleDylan Sheneth Edirisinghe0Ho-Seong Yang1Min-Sung Kim2Byung-Ha Kim3Sudath Prasanna Gunawardane4Young-Ho Lee5Department of Mechanical Engineering, Korea Maritime and Ocean University, Busan 49112, KoreaDepartment of Mechanical Engineering, Korea Maritime and Ocean University, Busan 49112, KoreaDepartment of Mechanical Engineering, Korea Maritime and Ocean University, Busan 49112, KoreaDepartment of Mechanical Engineering, Korea Maritime and Ocean University, Busan 49112, KoreaDepartment of Mechanical Engineering, University of Peradeniya, Peradeniya 20400, Sri LankaDepartment of Mechanical Engineering, Korea Maritime and Ocean University, Busan 49112, KoreaThe Archimedes screw turbine (AST) is the most sustainable mini-hydropower extraction method that offers number of economic, social, and environmental advantages. Nowadays, many researchers are interested in AST development as it is considered a new technology. Currently, a lot of researchers are conducting experimental testing of the screws, comparing their reliability with computational fluid dynamic (CFD) analyses. Almost all of them are lab-scale testing models that claiming an average 80% efficiency for low pitch angles. In the case of a real site with a small inclination angle, the length of the screw is large enough to cause severe problems, specially related to bending of the screw. Therefore, this research was conducted to analyze the CFD flow field in a real site-scale AST with the maximum possible inclination of 45 degrees. In addition, the design was done without the upper and lower reservoir as it was conceived as a run-of-river flow system. The simulated real scale AST result showed a maximum efficiency of around 82% for a 5.2 m hydraulic head and 0.232 m<sup>3</sup>/s discharge. Many researchers claim above 80% efficiency for low inclination angle ASTs with reservoirs. This CFD study indicates that even higher inclination angle ASTs can achieve 80% efficiency in run-of-river; real-scale applications.https://www.mdpi.com/1996-1073/14/11/3307Archimedes screwturbinehydroCFDflow field |
| spellingShingle | Dylan Sheneth Edirisinghe Ho-Seong Yang Min-Sung Kim Byung-Ha Kim Sudath Prasanna Gunawardane Young-Ho Lee Computational Flow Analysis on a Real Scale Run-of-River Archimedes Screw Turbine with a High Incline Angle Energies Archimedes screw turbine hydro CFD flow field |
| title | Computational Flow Analysis on a Real Scale Run-of-River Archimedes Screw Turbine with a High Incline Angle |
| title_full | Computational Flow Analysis on a Real Scale Run-of-River Archimedes Screw Turbine with a High Incline Angle |
| title_fullStr | Computational Flow Analysis on a Real Scale Run-of-River Archimedes Screw Turbine with a High Incline Angle |
| title_full_unstemmed | Computational Flow Analysis on a Real Scale Run-of-River Archimedes Screw Turbine with a High Incline Angle |
| title_short | Computational Flow Analysis on a Real Scale Run-of-River Archimedes Screw Turbine with a High Incline Angle |
| title_sort | computational flow analysis on a real scale run of river archimedes screw turbine with a high incline angle |
| topic | Archimedes screw turbine hydro CFD flow field |
| url | https://www.mdpi.com/1996-1073/14/11/3307 |
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