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. | |
会议录名称 | PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2017, VOL 1B |
2017 | |
会议名称 | ASME Fluids Engineering Division Summer Meeting |
会议日期 | JUL 30-AUG 03, 2017 |
会议地点 | Waikoloa, HI |
摘要 | 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记录号 | WOS:000417224100066 |
资助信息 | This paper is funded by the National Key Research and Development program under 2016YFB1200506. |
ISBN号 | 978-0-7918-5805-9 |
收录类别 | CPCI-S ; EI |
语种 | 英语 |
引用统计 | |
文献类型 | 会议论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/72173 |
专题 | 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 |
通讯作者 | Guo, DL (reprint author), Chinese Acad Sci, Inst Mech, Beijing, Peoples R China. |
作者单位 | 1.[Guo, Dilong 2.Liu, Wen 3.Song, Junhao 4.Zhang, Ye 5.Yang, Guowei] Chinese Acad Sci, Inst Mech, Beijing, Peoples R China |
推荐引用方式 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]PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2017, VOL 1B,2017. |
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