Numerical Study on the Anti-Snow Performance of Deflectors on a High-Speed Train Bogie Frame
In this paper, a new installation of flat plate deflector which attached on the bottom of the bogie frame is proposed and its anti-snow accumulation performance with different attack angles is numerically studied. The wind-snow two-phase flow in the bogie region is simulated based on the Reynolds Av...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Isfahan University of Technology
2020-01-01
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| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | http://jafmonline.net/JournalArchive/download?file_ID=53207&issue_ID=1008 |
| _version_ | 1811244599970103296 |
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| author | G. Gao Q. Chen J. Zhang Y. Zhang Z. Tian C. Jiang |
| author_facet | G. Gao Q. Chen J. Zhang Y. Zhang Z. Tian C. Jiang |
| author_sort | G. Gao |
| collection | DOAJ |
| description | In this paper, a new installation of flat plate deflector which attached on the bottom of the bogie frame is proposed and its anti-snow accumulation performance with different attack angles is numerically studied. The wind-snow two-phase flow in the bogie region is simulated based on the Reynolds Averaged Navier-Stokes (RANS) equations combined with the Realizable "k-ε" turbulence model and the Lagrangian particle phase method. The adopted numerical simulation methodology is verified and validated by comparing with previous wind tunnel tests. In this paper, three typical attack angles (30°, 60°, 90°) for deflector are studied. The results show that: the 30° case has a medium influence on the flow field and reduces snow accumulation by 35.14%; the 60° case guides the high-speed airflow downward and has the best effect with 62.46% reduction in snow accumulation; the 90° case has the smallest reduction with 20.30% in the mass. Overall, all deflectors with three different installation angles can reduce the mass of snow accumulated on the bogie surface. |
| first_indexed | 2024-04-12T14:28:01Z |
| format | Article |
| id | doaj.art-d81bc0add2ae4a918ab4eca5e25d0cce |
| institution | Directory Open Access Journal |
| issn | 1735-3572 |
| language | English |
| last_indexed | 2024-04-12T14:28:01Z |
| publishDate | 2020-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-d81bc0add2ae4a918ab4eca5e25d0cce2022-12-22T03:29:24ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35722020-01-0113513771389.Numerical Study on the Anti-Snow Performance of Deflectors on a High-Speed Train Bogie FrameG. Gao0Q. Chen1J. Zhang2Y. Zhang3Z. Tian4C. Jiang5Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, 410075, ChinaKey Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, 410075, ChinaKey Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, 410075, ChinaKey Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, 410075, ChinaKey Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, 410075, ChinaKey Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha, Hunan, 410075, ChinaIn this paper, a new installation of flat plate deflector which attached on the bottom of the bogie frame is proposed and its anti-snow accumulation performance with different attack angles is numerically studied. The wind-snow two-phase flow in the bogie region is simulated based on the Reynolds Averaged Navier-Stokes (RANS) equations combined with the Realizable "k-ε" turbulence model and the Lagrangian particle phase method. The adopted numerical simulation methodology is verified and validated by comparing with previous wind tunnel tests. In this paper, three typical attack angles (30°, 60°, 90°) for deflector are studied. The results show that: the 30° case has a medium influence on the flow field and reduces snow accumulation by 35.14%; the 60° case guides the high-speed airflow downward and has the best effect with 62.46% reduction in snow accumulation; the 90° case has the smallest reduction with 20.30% in the mass. Overall, all deflectors with three different installation angles can reduce the mass of snow accumulated on the bogie surface.http://jafmonline.net/JournalArchive/download?file_ID=53207&issue_ID=1008snow accumulation; lagrangian particle phase; wind-snow two-phase flow; high-speed train bogie. |
| spellingShingle | G. Gao Q. Chen J. Zhang Y. Zhang Z. Tian C. Jiang Numerical Study on the Anti-Snow Performance of Deflectors on a High-Speed Train Bogie Frame Journal of Applied Fluid Mechanics snow accumulation; lagrangian particle phase; wind-snow two-phase flow; high-speed train bogie. |
| title | Numerical Study on the Anti-Snow Performance of Deflectors on a High-Speed Train Bogie Frame |
| title_full | Numerical Study on the Anti-Snow Performance of Deflectors on a High-Speed Train Bogie Frame |
| title_fullStr | Numerical Study on the Anti-Snow Performance of Deflectors on a High-Speed Train Bogie Frame |
| title_full_unstemmed | Numerical Study on the Anti-Snow Performance of Deflectors on a High-Speed Train Bogie Frame |
| title_short | Numerical Study on the Anti-Snow Performance of Deflectors on a High-Speed Train Bogie Frame |
| title_sort | numerical study on the anti snow performance of deflectors on a high speed train bogie frame |
| topic | snow accumulation; lagrangian particle phase; wind-snow two-phase flow; high-speed train bogie. |
| url | http://jafmonline.net/JournalArchive/download?file_ID=53207&issue_ID=1008 |
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