Velocity profiles and energy fluctuations in simple shear granular flows

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 > 山地灾害与地表过程重点实验室

	Velocity profiles and energy fluctuations in simple shear granular flows
	Liu, Chuanqi 1; Sun, Qicheng 1; Zhou, Gordon G. D.2
刊名	PARTICUOLOGY
	2016-08-01
卷号	27 页码:80-87
关键词	Dense granular flows Simple shear Energy fluctuations
ISSN号	1674-2001
通讯作者	Sun, Qicheng
英文摘要	Rheology analysis of granular flows is important for predicting geophysical hazards and designing industrial processes. Using a discrete element method, we simulate simple shear flows in 3D under a constant confining pressure of 10 kPa. The inertial number proposed by the GDR MiDi group in France is adopted to distinguish rheology regimes. Both translational and angular velocity profiles are investigated, and both fluid-like and solid-like behavior modes are observed in the flows. The maximum angular velocity occurs near the localized deformation area. We also investigate the energy characteristics of the flows and find that at very small shearing speed, the mean kinetic energy density e(k) is close to zero, while the mean elastic energy density e(c) is much greater. At large shearing speed, e(k) increases. The fluctuating parts of the two types of energy increase with increasing shear speed. Thus, the mean energy density ratio e(k)/e(c) can be used in addition to the inertial number to distinguish flow regimes. These results provide insights from energetics into the rheological properties of granular flows. (C) 2015 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical ; Materials Science, Multidisciplinary
研究领域[WOS]	Engineering ; Materials Science
关键词[WOS]	DENSE ; TRANSITION ; DEM ; TEMPERATURE ; RHEOLOGY ; SPHERES ; SOLIDS ; ORDER
收录类别	SCI
语种	英语
WOS记录号	WOS:000378959000009
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/17511]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
作者单位	1.Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
推荐引用方式 GB/T 7714	Liu, Chuanqi,Sun, Qicheng,Zhou, Gordon G. D.. Velocity profiles and energy fluctuations in simple shear granular flows[J]. PARTICUOLOGY,2016,27:80-87.
APA	Liu, Chuanqi,Sun, Qicheng,&Zhou, Gordon G. D..(2016).Velocity profiles and energy fluctuations in simple shear granular flows.PARTICUOLOGY,27,80-87.
MLA	Liu, Chuanqi,et al."Velocity profiles and energy fluctuations in simple shear granular flows".PARTICUOLOGY 27(2016):80-87.