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- Title
高速鐵路隧道內接觸網空氣動力學影響因素研究.
- Authors
彭龙虎; 李向东; 李文斌; 王小兵; 刘春浩
- Abstract
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.
- Subjects
FINITE volume method; SUPERSONIC aerodynamics; WIND pressure; FLUID dynamics; HIGH speed trains
- Publication
Journal of Harbin University of Science & Technology, 2023, Vol 28, Issue 3, p149
- ISSN
1007-2683
- Publication type
Article
- DOI
10.15938/j.jhust.2023.03.019