Numerical study on aerodynamic resistance reduction of high-speed train using vortex generator
Vortex generator (VG) is one of the potential technical tools to reduce the aerodynamic resistance of high-speed trains. The passive control resistance reduction research of a high-speed train is carried out by using VG. Three typical installation locations, including flow separation point, boundary...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2023-12-01
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| Series: | Engineering Applications of Computational Fluid Mechanics |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/19942060.2022.2153925 |
| _version_ | 1797403902606311424 |
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| author | Tian Li Hao Liang Jie Zhang Jiye Zhang |
| author_facet | Tian Li Hao Liang Jie Zhang Jiye Zhang |
| author_sort | Tian Li |
| collection | DOAJ |
| description | Vortex generator (VG) is one of the potential technical tools to reduce the aerodynamic resistance of high-speed trains. The passive control resistance reduction research of a high-speed train is carried out by using VG. Three typical installation locations, including flow separation point, boundary layer mutation and streamline transition location, and several nearby locations were selected to study the effect of VG location on the train aerodynamic characteristics. The results show that the tail car drag is significantly reduced when the VG is arranged at the boundary layer mutation, the tail car’s resistance can be reduced by 15.42%. The tail car reduces resistance by 3.87% when VG is set at the flow separation point. By analyzing the flow field structure, we found that the VG arranged in front of the separation point triggers the flow separation, which destroys the balance between the separation and longitudinal vortex. It effectively reduces the strength of the separation vortex, thereby reducing the tail car’s aerodynamic drag. The research provides a new thought for the aerodynamic resistance reduction of high-speed trains, and is of great significance to break the limitations of traditional aerodynamic drag reduction technology of trains. |
| first_indexed | 2024-03-09T02:46:14Z |
| format | Article |
| id | doaj.art-5c2ab13d1d4a413da66bb097dfc1642d |
| institution | Directory Open Access Journal |
| issn | 1994-2060 1997-003X |
| language | English |
| last_indexed | 2024-03-09T02:46:14Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Engineering Applications of Computational Fluid Mechanics |
| spelling | doaj.art-5c2ab13d1d4a413da66bb097dfc1642d2023-12-05T16:53:44ZengTaylor & Francis GroupEngineering Applications of Computational Fluid Mechanics1994-20601997-003X2023-12-0117110.1080/19942060.2022.2153925Numerical study on aerodynamic resistance reduction of high-speed train using vortex generatorTian Li0Hao Liang1Jie Zhang2Jiye Zhang3State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, People’s Republic of ChinaState Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, People’s Republic of ChinaSchool of Traffic and Transportation Engineering, Central South University, Changsha, People’s Republic of ChinaState Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, People’s Republic of ChinaVortex generator (VG) is one of the potential technical tools to reduce the aerodynamic resistance of high-speed trains. The passive control resistance reduction research of a high-speed train is carried out by using VG. Three typical installation locations, including flow separation point, boundary layer mutation and streamline transition location, and several nearby locations were selected to study the effect of VG location on the train aerodynamic characteristics. The results show that the tail car drag is significantly reduced when the VG is arranged at the boundary layer mutation, the tail car’s resistance can be reduced by 15.42%. The tail car reduces resistance by 3.87% when VG is set at the flow separation point. By analyzing the flow field structure, we found that the VG arranged in front of the separation point triggers the flow separation, which destroys the balance between the separation and longitudinal vortex. It effectively reduces the strength of the separation vortex, thereby reducing the tail car’s aerodynamic drag. The research provides a new thought for the aerodynamic resistance reduction of high-speed trains, and is of great significance to break the limitations of traditional aerodynamic drag reduction technology of trains.https://www.tandfonline.com/doi/10.1080/19942060.2022.2153925Vortex generatorhigh-speed trainflow controlaerodynamic resistancenumerical simulation |
| spellingShingle | Tian Li Hao Liang Jie Zhang Jiye Zhang Numerical study on aerodynamic resistance reduction of high-speed train using vortex generator Engineering Applications of Computational Fluid Mechanics Vortex generator high-speed train flow control aerodynamic resistance numerical simulation |
| title | Numerical study on aerodynamic resistance reduction of high-speed train using vortex generator |
| title_full | Numerical study on aerodynamic resistance reduction of high-speed train using vortex generator |
| title_fullStr | Numerical study on aerodynamic resistance reduction of high-speed train using vortex generator |
| title_full_unstemmed | Numerical study on aerodynamic resistance reduction of high-speed train using vortex generator |
| title_short | Numerical study on aerodynamic resistance reduction of high-speed train using vortex generator |
| title_sort | numerical study on aerodynamic resistance reduction of high speed train using vortex generator |
| topic | Vortex generator high-speed train flow control aerodynamic resistance numerical simulation |
| url | https://www.tandfonline.com/doi/10.1080/19942060.2022.2153925 |
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