| Study of unsteady aerodynamic performance of a high-speed train entering a double-track tunnel under crosswind conditions | |
Luo, Jianjun; Wang, Lei; Shang, Suying; Li, Feilong; Guo DL(郭迪龙) ; Gao, Liping; Wang, Dengke
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| Source Publication | JOURNAL OF FLUIDS AND STRUCTURES
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| 2023-04 | |
| Volume | 118Pages:103836 |
| ISSN | 0889-9746 |
| Abstract | Significant variation exists in the aerodynamic performances of high-speed trains (HSTs) traveling in different infrastructure scenarios. When high-speed trains travel from one infrastructure scenario to another, the aerodynamic loads acting on the trains change significantly. To investigate the safety as a HST enters a tunnel under crosswind conditions, the unsteady aerodynamic performance of the HST and the flow structures around the train were numerically studied. The results demonstrated that the flow field and the pressure field were symmetrically distributed under conditions with no crosswind, while the distribution of the flow field and the pressure field were clearly asymmetric when crosswinds were present at the tunnel entrance. Furthermore, the flow structures near the train and the pressure distributed on the train surfaces outside the tunnel were most severely affected by the presence of crosswinds. Vortex structures appeared on the windward side surface of the train inside the tunnel and on the leeward side surface of the train outside the tunnel during the entrance of the train into the tunnel. Due to the sudden changes in the flow and the pressure as the train entered the tunnel, the aerodynamic loads changed drastically, and the variations of each vehicle were different, resulting in complex dynamic responses, including lateral vibrations and pitching movement. In particular, the aerodynamic performance of the rear vehicle was the worst as the train entered the tunnel when no crosswind conditions existed, while the head vehicle was the most negatively affected for safe operation of the HST when strong crosswinds were present at the tunnel entrance. (c) 2023 Elsevier Ltd. All rights reserved. |
| Keyword | Aerodynamic performance Flow structures High -speed train Crosswinds Railway tunnel Transient pressure |
| DOI | 10.1016/j.jfluidstructs.2023.103836 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000964370700001 |
| Funding Organization | National Natural Science Foundation of China [51878038, 51678036] |
| Classification | 二类 |
| Ranking | 3+ |
| Contributor | Wang, L |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/92242 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.(Luo Jianjun, Wang Lei, Li Feilong, Gao Liping, Wang Dengke) Beijing Jiaotong Univ Sch Civil Engn Beijing 100044 Peoples R China 2.(Luo Jianjun, Wang Lei, Li Feilong, Gao Liping, Wang Dengke) Beijing Jiaotong Univ Minist Educ Key Lab Urban Underground Engn Beijing 100044 Peoples R China 3.(Shang Suying) Beijing Xinqiao Technol Dev Co Ltd Beijing 100088 Peoples R China 4.(Guo Dilong) Chinese Acad Sci Inst Mech Key Lab Mech Fluid Solid Coupling Syst Beijing 100190 Peoples R China 5.(Guo Dilong) Chinese Acad Sci Inst Mech Beijing 100190 Peoples R China 6.(Wang Lei) Beijing Jiaotong Univ Key Lab Urban Underground Engn Minist Educ Key Lab Urban Underground Engn 3Shangyuancun Beijing 100044 Peoples R China |
| Recommended Citation GB/T 7714 | Luo, Jianjun,Wang, Lei,Shang, Suying,et al. Study of unsteady aerodynamic performance of a high-speed train entering a double-track tunnel under crosswind conditions[J]. JOURNAL OF FLUIDS AND STRUCTURES,2023,118:103836.Rp_Au:Wang, L |
| APA | Luo, Jianjun.,Wang, Lei.,Shang, Suying.,Li, Feilong.,郭迪龙.,...&Wang, Dengke.(2023).Study of unsteady aerodynamic performance of a high-speed train entering a double-track tunnel under crosswind conditions.JOURNAL OF FLUIDS AND STRUCTURES,118,103836. |
| MLA | Luo, Jianjun,et al."Study of unsteady aerodynamic performance of a high-speed train entering a double-track tunnel under crosswind conditions".JOURNAL OF FLUIDS AND STRUCTURES 118(2023):103836. |
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| Jp2023Fa168.pdf（5569KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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