IMECH-IR  > 流固耦合系统力学重点实验室
THE AERODYNAMIC CHARACTERISTICS OF THE PANTOGRAPH WHEN THE TRAIN PASSES THROUGH THE TUNNEL
Guo DL(郭迪龙); Liu W; Song JH(宋军浩); Zhang Y; Yang GW(杨国伟); Guo, DL (reprint author), Chinese Acad Sci, Inst Mech, Beijing, Peoples R China.
Source PublicationPROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2017, VOL 1B
2017
Conference NameASME Fluids Engineering Division Summer Meeting
Conference DateJUL 30-AUG 03, 2017
Conference PlaceWaikoloa, HI
Abstract

The aerodynamic force acting on the pantograph by the airflow is obviously unsteady and has a certain vibration frequency and amplitude, while the high-speed train passes through the tunnel. In addition to the unsteady behavior in the open-air operation, the compressive and expansion waves in the tunnel will be generated due to the influence of the blocking ratio. The propagation of the compression and expansion waves in the tunnel will affect the pantograph pressure distribution and cause the pantograph stress state to change significantly, which affects the current characteristics of the pantograph. In this paper, the aerodynamic force of the pantograph is studied with the method of the IDDES combined with overset grid technique when high speed train passes through the tunnel. The results show that the aerodynamic force of the pantograph is subjected to violent oscillations when the pantograph passes through the tunnel, especially at the entrance of the tunnel, the exit of the tunnel and the expansion wave passing through the pantograph. The changes of the pantograph aerodynamic force can reach a maximum amplitude of 106%. When high-speed trains pass through tunnels at different speeds, the aerodynamic coefficients of the pantographs are roughly the same.

WOS IDWOS:000417224100066
Funding OrganizationThis paper is funded by the National Key Research and Development program under 2016YFB1200506.
ISBN978-0-7918-5805-9
Indexed ByCPCI-S ; EI
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/72173
Collection流固耦合系统力学重点实验室
高温气体动力学国家重点实验室
Corresponding AuthorGuo, DL (reprint author), Chinese Acad Sci, Inst Mech, Beijing, Peoples R China.
Affiliation1.[Guo, Dilong
2.Liu, Wen
3.Song, Junhao
4.Zhang, Ye
5.Yang, Guowei] Chinese Acad Sci, Inst Mech, Beijing, Peoples R China
Recommended Citation
GB/T 7714
Guo DL,Liu W,Song JH,et al. THE AERODYNAMIC CHARACTERISTICS OF THE PANTOGRAPH WHEN THE TRAIN PASSES THROUGH THE TUNNEL[C]. NEW YORK:AMER SOC MECHANICAL ENGINEERS,2017.
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