Study of unsteady aerodynamic performance of a high-speed train entering a double-track tunnel under crosswind conditions

doi:10.1016/j.jfluidstructs.2023.103836

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	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
刊名	JOURNAL OF FLUIDS AND STRUCTURES
	2023-04
卷号	118 页码:103836
关键词	Aerodynamic performance Flow structures High -speed train Crosswinds Railway tunnel Transient pressure
ISSN号	0889-9746
DOI	10.1016/j.jfluidstructs.2023.103836
英文摘要	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.
分类号	二类
WOS研究方向	WOS:000964370700001
语种	英语
资助机构	National Natural Science Foundation of China [51878038, 51678036]
其他责任者	Wang, L
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/92242]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.(Wang Lei) Beijing Jiaotong Univ Key Lab Urban Underground Engn Minist Educ Key Lab Urban Underground Engn 3Shangyuancun Beijing 100044 Peoples R China 2.(Guo Dilong) Chinese Acad Sci Inst Mech Beijing 100190 Peoples R China 3.(Guo Dilong) Chinese Acad Sci Inst Mech Key Lab Mech Fluid Solid Coupling Syst Beijing 100190 Peoples R China 4.(Shang Suying) Beijing Xinqiao Technol Dev Co Ltd Beijing 100088 Peoples R China 5.(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 6.(Luo Jianjun, Wang Lei, Li Feilong, Gao Liping, Wang Dengke) Beijing Jiaotong Univ Sch Civil Engn Beijing 100044 Peoples R China
推荐引用方式 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.
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.