Study on Aerodynamic Factors of Overhead Catenary in High-speed Railway Tunnel
In order to explore the influencing factors of catenary aerodynamics in high-speed railway tunnels, based on the finite volume method, the aerodynamics models of train-set passing through different tunnels were established, and the three-dimensional outflow field of catenary air were numerically si...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Harbin University of Science and Technology Publications
2023-06-01
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| Series: | Journal of Harbin University of Science and Technology |
| Subjects: | |
| Online Access: | https://hlgxb.hrbust.edu.cn/#/digest?ArticleID=2226 |
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| Summary: | In order to explore the influencing factors of catenary aerodynamics in high-speed railway tunnels, based on the finite volume method, the aerodynamics models of train-set passing through different tunnels were established, and the three-dimensional outflow field of catenary air were numerically simulated by using fluid dynamics software. The extreme values of wind load under different working conditions were obtained from the simulation results, and the basic wind migration of catenary clues was analyzed and calculated. The results show that the main factors affecting the wind load of the catenary in the tunnel are tunnel clearance area and vehicle speed. When the train-set passes and crosses in the tunnel, the maximum wind offset value of the catenary clues decreases with the increase of the tunnel clearance area, and increases in a nonlinear way with the increase of the speed. In order to ensure safety, the wind deviation of catenary can be reduced by reducing the span length of catenary or increasing the horizontal tension of catenary. |
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| ISSN: | 1007-2683 |