干旱区生态环境知识资源中心(Arid): Aerodynamic impact of wind-sand flow on moving trains in tunnel-embankment transition section: from field testing to CFD modeling

Arid

DOI	10.1080/19942060.2023.2279993
	Aerodynamic impact of wind-sand flow on moving trains in tunnel-embankment transition section: from field testing to CFD modeling
	Deng, E.; Yue, Huan; Liu, Xin-Yuan; Ni, Yi-Qing
通讯作者	Ni, YQ
来源期刊	ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS
ISSN	1994-2060
EISSN	1997-003X
出版年	2023
卷号	17 期号:1
英文摘要	The acceleration of land desertification has led to an increasingly serious threat to the operation safety of tunnel entrance in the Gobi and desert regions by wind-sand flow, and it is urgent to study and enhance the running safety of train. Firstly, an ultrasonic anemometer is used to collect the characteristics of wind-sand flow at a tunnel entrance site in Xinjiang, China. Then, based on the Euler multiphase flow and the SST k-w model, the variation difference law of the train running at the tunnel entrance is revealed under the four inflow conditions of constant crosswind, constant wind-sand flow, pulsating crosswind and pulsating wind-sand flow respectively. Finally, the disturbance law of the solid wind barrier at the tunnel entrance on the wind-sand flow and the influence mechanism on the train's flow field structure and pressure are revealed. The results show that compared with other cases, the pulsating wind-sand flow has the most significant effect on the moving trains' aerodynamic loads (ALs), and the sand particles carried in the air cause the trains' ALs to fluctuate within 9.09%. The solid wind barrier has a significant disturbing effect on the wind-sand flow, and the lightweight sand particles follow the air flow over the top of the wind barrier and are not deposited on the embankment during a short period, and the wind-sand flow's impact on the HSTs is dramatically reduced. The wind barrier changes the HST's flow field, and the AL fluctuation of the train is sharply reduced. The maximum values of the head train's AL coefficients are reduced by 46.53-85.75%.
英文关键词	Wind-sand flow High-speed train (HST) tunnel entrance wind barrier modeling
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001102068800001
WOS关键词	HIGH-SPEED TRAINS ; WINDBLOWN SAND ; RAILWAY ; BEHAVIOR ; EROSION ; PERFORMANCE ; TRANSPORT ; WEAR
WOS类目	Engineering, Multidisciplinary ; Engineering, Mechanical ; Mechanics
WOS研究方向	Engineering ; Mechanics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396080
推荐引用方式 GB/T 7714	Deng, E.,Yue, Huan,Liu, Xin-Yuan,et al. Aerodynamic impact of wind-sand flow on moving trains in tunnel-embankment transition section: from field testing to CFD modeling[J],2023,17(1).
APA	Deng, E.,Yue, Huan,Liu, Xin-Yuan,&Ni, Yi-Qing.(2023).Aerodynamic impact of wind-sand flow on moving trains in tunnel-embankment transition section: from field testing to CFD modeling.ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS,17(1).
MLA	Deng, E.,et al."Aerodynamic impact of wind-sand flow on moving trains in tunnel-embankment transition section: from field testing to CFD modeling".ENGINEERING APPLICATIONS OF COMPUTATIONAL FLUID MECHANICS 17.1(2023).