干旱区生态环境知识资源中心(Arid): Simulation of wall barrier properties along a railway track during a sandstorm

Arid

DOI	10.1016/j.aeolia.2020.100626
	Simulation of wall barrier properties along a railway track during a sandstorm
	Sarafrazi, Vahid; Talaee, Mohammad Reza
通讯作者	Talaee, MR
来源期刊	AEOLIAN RESEARCH
ISSN	1875-9637
EISSN	2212-1684
出版年	2020
卷号	46
英文摘要	Wind flow moves sand particles in a gas-solid multiphase environment by application of lifting and thrusting forces. This study uses the Reynolds-averaged Navier-Stokes equations and the dense discrete phase method-kinetic theory of granular flow. The study also uses Eulerian and Lagrangian models to simulate air and sand particles, respectively. The goal is to numerically study the behavior of sand particles in the presence of a rigid wall barrier to determine the relationship between the shelter distance (the safe distance after the barrier to prevent sand particle deposition) and the barrier height at different wind speeds. Therefore, sand particles with different mean diameters and mass distributions on the eastern railway line (Tabas), Iran, are examined under different wind speeds. The results indicate that the particles will be deposited at a certain distance after the barrier given their size and wind speed. Accordingly, increasing the diameter of the particles will decrease the shelter distance after the barrier, while increasing the wind speed will increase this distance. Finally, from the discussion of the location of railway tracks around the rigid wall barrier, it is found that a minimum height of 1.2 m is required to create a 17-meter shelter distance, by taking into considerations sandstorms in the eastern Iran. The results can be used to determine the proper distance of rigid wall barriers in desert areas according to specific sand diameter distribution and wind speeds.
英文关键词	Wind speed Gas-solid multiphase flow Railway tracks Sandstorm Shelter distance
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000564564400005
WOS关键词	AIR-FLOW ; SAND ; FENCES ; FIELD
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/2XILL650/325927
作者单位	[Sarafrazi, Vahid; Talaee, Mohammad Reza] Iran Univ Sci & Technol IUST, Sch Railway Engn, POB 16846-13114, Tehran, Iran; [Sarafrazi, Vahid] Iran Univ Sci & Technol, Tehran, Iran
推荐引用方式 GB/T 7714	Sarafrazi, Vahid,Talaee, Mohammad Reza. Simulation of wall barrier properties along a railway track during a sandstorm[J],2020,46.
APA	Sarafrazi, Vahid,&Talaee, Mohammad Reza.(2020).Simulation of wall barrier properties along a railway track during a sandstorm.AEOLIAN RESEARCH,46.
MLA	Sarafrazi, Vahid,et al."Simulation of wall barrier properties along a railway track during a sandstorm".AEOLIAN RESEARCH 46(2020).