Assessment of head loss coefficients for water turbine intake trash-racks by numerical modeling
In this work, numerical simulations of fluid flow around trash-rack for different bar cross sections are conducted to investigate cross section influence on head losses. Comparison with experimental data is conducted to validate the usage of numerical simulations which enable investigation of great...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-01-01
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| Series: | Journal of Advanced Research |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090123219301687 |
| _version_ | 1819070249546285056 |
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| author | Ivana Lučin Zoran Čarija Luka Grbčić Lado Kranjčević |
| author_facet | Ivana Lučin Zoran Čarija Luka Grbčić Lado Kranjčević |
| author_sort | Ivana Lučin |
| collection | DOAJ |
| description | In this work, numerical simulations of fluid flow around trash-rack for different bar cross sections are conducted to investigate cross section influence on head losses. Comparison with experimental data is conducted to validate the usage of numerical simulations which enable investigation of great number of trash-rack configurations. In previous experimental studies researchers mostly focused on trash-rack parameters (bar spacing, bar length, inclinations etc.) where bar cross section was mainly rectangular or streamlined shape. Therefore, 2D simulations for different cross sections are carried out for a range of trash-rack configurations in order to provide better insight how it affects energy losses. It is shown that head loss reduction due to change in cross section is greatly dependent on trash-rack configuration, therefore optimization of simplified real water turbine trash-rack is also conducted to produce the cross section that generates smallest head losses for given configuration. Keywords: Trash-rack, Head-loss, Numerical modeling, RANS model, Fish protection |
| first_indexed | 2024-12-21T17:02:56Z |
| format | Article |
| id | doaj.art-66971914bb244e7bbd9c79bb08579d1f |
| institution | Directory Open Access Journal |
| issn | 2090-1232 |
| language | English |
| last_indexed | 2024-12-21T17:02:56Z |
| publishDate | 2020-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Advanced Research |
| spelling | doaj.art-66971914bb244e7bbd9c79bb08579d1f2022-12-21T18:56:35ZengElsevierJournal of Advanced Research2090-12322020-01-0121109119Assessment of head loss coefficients for water turbine intake trash-racks by numerical modelingIvana Lučin0Zoran Čarija1Luka Grbčić2Lado Kranjčević3Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, CroatiaFaculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia; Center for Advanced Computing and Modelling, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, Croatia; Corresponding author at: Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia.Faculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, CroatiaFaculty of Engineering, University of Rijeka, Vukovarska 58, 51000 Rijeka, Croatia; Center for Advanced Computing and Modelling, University of Rijeka, Radmile Matejčić 2, 51000 Rijeka, CroatiaIn this work, numerical simulations of fluid flow around trash-rack for different bar cross sections are conducted to investigate cross section influence on head losses. Comparison with experimental data is conducted to validate the usage of numerical simulations which enable investigation of great number of trash-rack configurations. In previous experimental studies researchers mostly focused on trash-rack parameters (bar spacing, bar length, inclinations etc.) where bar cross section was mainly rectangular or streamlined shape. Therefore, 2D simulations for different cross sections are carried out for a range of trash-rack configurations in order to provide better insight how it affects energy losses. It is shown that head loss reduction due to change in cross section is greatly dependent on trash-rack configuration, therefore optimization of simplified real water turbine trash-rack is also conducted to produce the cross section that generates smallest head losses for given configuration. Keywords: Trash-rack, Head-loss, Numerical modeling, RANS model, Fish protectionhttp://www.sciencedirect.com/science/article/pii/S2090123219301687 |
| spellingShingle | Ivana Lučin Zoran Čarija Luka Grbčić Lado Kranjčević Assessment of head loss coefficients for water turbine intake trash-racks by numerical modeling Journal of Advanced Research |
| title | Assessment of head loss coefficients for water turbine intake trash-racks by numerical modeling |
| title_full | Assessment of head loss coefficients for water turbine intake trash-racks by numerical modeling |
| title_fullStr | Assessment of head loss coefficients for water turbine intake trash-racks by numerical modeling |
| title_full_unstemmed | Assessment of head loss coefficients for water turbine intake trash-racks by numerical modeling |
| title_short | Assessment of head loss coefficients for water turbine intake trash-racks by numerical modeling |
| title_sort | assessment of head loss coefficients for water turbine intake trash racks by numerical modeling |
| url | http://www.sciencedirect.com/science/article/pii/S2090123219301687 |
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