干旱区生态环境知识资源中心(Arid): Wind tunnel simulation of an opencut tunnel airflow field along the Linhe-Ceke Railway, China

Arid

DOI	10.1016/j.aeolia.2019.04.007
	Wind tunnel simulation of an opencut tunnel airflow field along the Linhe-Ceke Railway, China
	Yan, Min; Wang, Haibing; Zuo, Hejun; Li, Gangtie
通讯作者	Zuo, Hejun
来源期刊	AEOLIAN RESEARCH
ISSN	1875-9637
EISSN	2212-1684
出版年	2019
卷号	39 页码:66-76
英文摘要	Opencut tunnels are linear arch constructions that are being used as new structures to prevent sand encroachment on railway lines. The large size and shape of the contained structure affect the wind field around the structure in a manner different to how traditional constructions prevent sand accumulation. The present study identified the characteristics of wind velocity and flow fields in opencut tunnels in a wind-tunnel simulation. Results show that airflow having different wind angles (15 degrees-90 degrees) had different effects on the sand-accumulation-prevention characteristics of the opencut tunnel. The inflection point of a rapid change in wind speed was 6H (where H is the vertical height of the model) from the windward side of the opencut tunnel, and the position of an area of strong wind on the upper part of the opencut tunnel gradually moved to the windward side with an increase in the wind angle. This trend was not affected by a change in the indicated wind speed. The reattachment distance on the leeward side decreased with an increase in the wind angle, being 1H at 75 degrees-90 degrees, 2H at 30 degrees-60 degrees and 6H at 15 degrees or less. The protection effect was best for a large angle of the main wind direction (exceeding 75 degrees). Observed characteristics of the wind field show that the opencut tunnel is effective at all wind angles in preventing and controlling railway sand flow hazards and can thus ensure smooth railway operation.
英文关键词	Airflow field Opencut tunnel for sand prevention Wind tunnel simulation Linhe-Ceke railway
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000474325400006
WOS关键词	QINGHAI-TIBET RAILWAY ; SEDIMENT TRANSPORT ; TRANSVERSE DUNES ; SAND TRANSPORT ; LEE SIDE ; SEPARATION ; EROSION ; PROFILE ; DESERT ; SYSTEM
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/213899
作者单位	Inner Mongolia Agr Univ, Coll Desert Control Sci & Engn, Inner Mongolia Key Lab Aeolian Phys & Desertifica, 29 Erdos East St, Hohhot 010011, Inner Mongolia, Peoples R China
推荐引用方式 GB/T 7714	Yan, Min,Wang, Haibing,Zuo, Hejun,et al. Wind tunnel simulation of an opencut tunnel airflow field along the Linhe-Ceke Railway, China[J],2019,39:66-76.
APA	Yan, Min,Wang, Haibing,Zuo, Hejun,&Li, Gangtie.(2019).Wind tunnel simulation of an opencut tunnel airflow field along the Linhe-Ceke Railway, China.AEOLIAN RESEARCH,39,66-76.
MLA	Yan, Min,et al."Wind tunnel simulation of an opencut tunnel airflow field along the Linhe-Ceke Railway, China".AEOLIAN RESEARCH 39(2019):66-76.