干旱区生态环境知识资源中心(Arid): CWE study of wind flow around railways: Effects of embankment and track system on sand sedimentation

Arid

DOI	10.1016/j.jweia.2020.104476
	CWE study of wind flow around railways: Effects of embankment and track system on sand sedimentation
	Horvat, Marko; Bruno, Luca; Khris, Sami
通讯作者	Horvat, M (corresponding author), Politecn Torino, Dept Architecture & Design, Viale Mattioli 39, I-10125 Turin, Italy.
来源期刊	JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
ISSN	0167-6105
EISSN	1872-8197
出版年	2021
卷号	208
英文摘要	Desert railways are constantly exposed to incoming sand blown by the wind. The railway body acts as an obstacle that perturbs the wind flow and the sand drift, resulting in zones of sand sedimentation and erosion. The insight into the local flow around the railway track and resulting sedimentation patterns is a necessary prerequisite to predict and prevent sand-induced limit states.The present study generally aims at filling such a gap, by investigating the local flow and the related potential sedimentation patterns around railways. The knowledge acquired about such patterns is required in the perspective of the design of innovative on-track Receiver Sand Mitigation Measures. The study adopts a Computational Wind Engineering approach to simulate the local wind flow, to obtain the shear stress field at the ground, to derive from it sand sedimentation/erosion patterns, and to obtain bulk performance metrics. The performances of different railway substructures and track systems are discussed under different incoming wind speeds and yaw angles. The simulated sedimentation/erosion patterns qualitatively agree with the field evidences observed along desert railways. The comparative analysis shows that rails elevated by humped sleepers or slab on top of a gentle-sloped substructure perform better than other track systems.
英文关键词	windblown Sand Sedimentation Erosion Railway aerodynamics Embankment Track system Computational wind engineering
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000608705100003
WOS关键词	FLUID-DYNAMICS CFD ; WINDBLOWN SAND ; AIR-FLOW ; TRANSPORT ; TRANSVERSE ; MODEL ; AERODYNAMICS ; FOREDUNE ; VEHICLES ; BEHAVIOR
WOS类目	Engineering, Civil ; 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/2XILL650/348053
作者单位	[Horvat, Marko; Bruno, Luca] Politecn Torino, Dept Architecture & Design, Viale Mattioli 39, I-10125 Turin, Italy; [Khris, Sami] Optiflow Co, 160 Chemin Madrague Ville, F-13015 Marseille, France; [Bruno, Luca; Khris, Sami] Windblown Sand Modelling & Mitigat Joint Res Grp, Turin, Italy
推荐引用方式 GB/T 7714	Horvat, Marko,Bruno, Luca,Khris, Sami. CWE study of wind flow around railways: Effects of embankment and track system on sand sedimentation[J],2021,208.
APA	Horvat, Marko,Bruno, Luca,&Khris, Sami.(2021).CWE study of wind flow around railways: Effects of embankment and track system on sand sedimentation.JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS,208.
MLA	Horvat, Marko,et al."CWE study of wind flow around railways: Effects of embankment and track system on sand sedimentation".JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS 208(2021).