干旱区生态环境知识资源中心(Arid): Dynamic mechanism of three-dimensional mixed-size grain/bed collision on non-flat bed using discrete element method

Arid

DOI	10.1007/s12517-019-5003-y
	Dynamic mechanism of three-dimensional mixed-size grain/bed collision on non-flat bed using discrete element method
	Lei, Ming; Xu, Ze-xing; Wang, Yi-kui; Wang, Xie-kang
通讯作者	Wang, Xie-kang
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2020
卷号	13 期号:2
英文摘要	The impact of particles on slope bed is not only one of the main processes of eolian saltation, but also lead to the sand surface damage and provide sufficient materials for the sediment supply process in desert rivers. In order to reveal the mechanism of excessive sediment supply in desert rivers, it is necessary to study the grain-bed impact process, which plays an important role on the wind erosion. In this study, based on the discrete element method (DEM) and previous researches, a three-dimensional numerical simulation is carried out to study the influence of the incident angle, incident angle, and lateral incident angle on grain-bed collision under different bed surfaces. Finally, by fitting the simulation data, we give the three-dimensional splash function of ejection velocity, ejection angle, and lateral ejection angle as well as lateral ejection velocity with the change of impact velocity, impact angle, and lateral impact angle on different bed surface. This study will enhance our understanding of the processes of eolian sand movement and will provide useful information about the mechanisms that drive sediment replenishment to desert rivers.
英文关键词	Eolian sand movement Bed slope Grain bed collision Discrete element method Splash function
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000513496300028
WOS关键词	NUMERICAL-SIMULATION ; SALTATING GRAINS ; SAND PARTICLES ; MODEL ; VELOCITIES ; REGIONS ; IMPACT ; RIPPLE ; DUNE
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314069
作者单位	Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China
推荐引用方式 GB/T 7714	Lei, Ming,Xu, Ze-xing,Wang, Yi-kui,et al. Dynamic mechanism of three-dimensional mixed-size grain/bed collision on non-flat bed using discrete element method[J],2020,13(2).
APA	Lei, Ming,Xu, Ze-xing,Wang, Yi-kui,&Wang, Xie-kang.(2020).Dynamic mechanism of three-dimensional mixed-size grain/bed collision on non-flat bed using discrete element method.ARABIAN JOURNAL OF GEOSCIENCES,13(2).
MLA	Lei, Ming,et al."Dynamic mechanism of three-dimensional mixed-size grain/bed collision on non-flat bed using discrete element method".ARABIAN JOURNAL OF GEOSCIENCES 13.2(2020).