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Velocity profiles and energy fluctuations in simple shear granular flows
Liu, Chuanqi1; Sun, Qicheng1; Zhou, Gordon G. D.2
Corresponding AuthorSun, Qicheng
2016
Source PublicationPARTICUOLOGY
ISSN1674-2001
EISSN2210-4291
Volume27Pages:80-87
SubtypeArticle
AbstractRheology 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.
KeywordDense Granular Flows Simple Shear Energy Fluctuations
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.partic.2015.06.003
WOS Subject ExtendedEngineering ; Materials Science
Indexed BySCI
WOS KeywordDENSE ; TRANSITION ; DEM ; TEMPERATURE ; RHEOLOGY ; SPHERES ; SOLIDS ; ORDER
Language英语
Quartile3区
TOP
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary
WOS IDWOS:000378959000009
Funding OrganizationNational Natural Science Foundation of China(11272048 ; European Commission Marie Curie Actions(IRSES-294976) ; Tsinghua University Initiative Scientific Research Program ; 51239006)
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17511
Collection山地灾害与地表过程重点实验室
Affiliation1.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
Recommended Citation
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.
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