Dynamic hydraulic jump and retrograde sedimentation in an open channel induced by sediment supply: experimental study and SPH simulation

doi:10.1007/s11629-019-5397-8

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > Journal of Mountain Science > Journal of Mountain Science-2019 > Vol16 No.8

	Dynamic hydraulic jump and retrograde sedimentation in an open channel induced by sediment supply: experimental study and SPH simulation
	Zheng Xiao-gang; Chen Ri-dong; Luo Min; Ehsan, Kazemi; Liu Xing-nian
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2019
卷号	16 期号:8 页码:1913-1927
关键词	Dynamic hydraulic jump Retrograde sedimentation Sediment supply Mountainous river Smoothed Particle Hydrodynamics Marked sediment particle
ISSN号	1672-6316
DOI	10.1007/s11629-019-5397-8
文献子类	Article
英文摘要	Mountainous torrents often carry large amounts of loose materials into the rivers, thus causing strong sediment transport. Experimentally it was found for the first time that when the intensive sediment motion occurs downstream over a gentle slope, the siltation of the riverbed is induced and the sediment particles can move upstream rapidly in the form of a retrograde sand wave, resulting in a higher water level along the river. To further study the complex mechanisms of this problem, a sediment mass model in the framework of the Smoothed Particle Hydrodynamics (SPH) method was presented to simulate the riverbed evolution, sediment particle motion, and the generation and development of dynamic hydraulic jump under the condition of sufficient sediment supply over a steep slope with varying angles. Because the sediment is not a continuous medium, the marker particle tracking approach was proposed to represent a piece of sediment with a marked sediment particle. The two-phase SPH model realizes the interaction between the sediment and fluid by moving the bed boundary particles up and down, so it can reasonably treat the fluid-sediment interfaces with high CPU efficiency. The critical triggering condition of sediment motion, the propagation of the hydraulic jump and the initial siltation position were all systematically studied. The experimental and numerical results revealed the extra disastrous sediment effect in a mountainous flood. The findings will be useful references to the disaster prevention and mitigation in mountainous rivers.
电子版国际标准刊号	1993-0321
语种	英语
WOS记录号	WOS:000478892900013
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/46559]
专题	Journal of Mountain Science_Journal of Mountain Science-2019_Vol16 No.8
推荐引用方式 GB/T 7714	Zheng Xiao-gang,Chen Ri-dong,Luo Min,et al. Dynamic hydraulic jump and retrograde sedimentation in an open channel induced by sediment supply: experimental study and SPH simulation[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(8):1913-1927.
APA	Zheng Xiao-gang,Chen Ri-dong,Luo Min,Ehsan, Kazemi,&Liu Xing-nian.(2019).Dynamic hydraulic jump and retrograde sedimentation in an open channel induced by sediment supply: experimental study and SPH simulation.JOURNAL OF MOUNTAIN SCIENCE,16(8),1913-1927.
MLA	Zheng Xiao-gang,et al."Dynamic hydraulic jump and retrograde sedimentation in an open channel induced by sediment supply: experimental study and SPH simulation".JOURNAL OF MOUNTAIN SCIENCE 16.8(2019):1913-1927.