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Three-dimensional numerical study on flow regimes of dry granular flows by DEM

文献类型：期刊论文

作者Zhou, Gordon G. D.1,2,3; Sun, Q. C.4
刊名POWDER TECHNOLOGY
出版日期2013-05-01
卷号239期号:239页码:115-127
关键词DEM Dry granular flow Flowing regime Granular temperature Classification of granular flows
ISSN号0032-5910
通讯作者周公旦
英文摘要Understanding the characteristics and mechanics of granular flows along sloping channels is fundamental and vital for the study of different in situ geophysical flows. Using the discrete element method (DEM), three-dimensional (3-D) dry granular flows are numerically modeled to study the contact behavior of solid particles along sloping channels, determine the 3-D velocity profiles along the flow height, and computer the corresponding shear rate. The channel confinement effect on granular flows is also investigated. By capturing the flow height and utilizing the definition of the Savage number, the variation in flow regimes inside a granular body along a sloping channel is researched. Finally, the fluctuation of solid particles in the flow is investigated with the use of granular temperature, and is proven to be influenced by the Savage number. Analysis shows that the combination of granular temperature and the Savage number is a good way to identify the flow regimes of granular flows. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
WOS标题词Science & Technology ; Technology
学科主题自然地理学 ; 工程力学 ; 水利工程
类目[WOS]Engineering, Chemical
研究领域[WOS]Engineering
关键词[WOS]GAS-FLUIDIZED BEDS ; DEBRIS FLOWS ; SURFACE FLOWS ; RAPID FLOW ; MODEL ; TEMPERATURE ; SIMULATIONS ; COEFFICIENT ; RESTITUTION ; PARTICLES
收录类别SCI
语种英语
WOS记录号WOS:000318581300014
公开日期2013-02-28
源URL[http://192.168.143.20:8080/handle/131551/4956]  
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.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu, Peoples R China
3.Minist Water Conservancy & Power, Chengdu, Peoples R China
4.Tsinghua Univ, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Gordon G. D.,Sun, Q. C.. Three-dimensional numerical study on flow regimes of dry granular flows by DEM[J]. POWDER TECHNOLOGY,2013,239(239):115-127.
APA Zhou, Gordon G. D.,&Sun, Q. C..(2013).Three-dimensional numerical study on flow regimes of dry granular flows by DEM.POWDER TECHNOLOGY,239(239),115-127.
MLA Zhou, Gordon G. D.,et al."Three-dimensional numerical study on flow regimes of dry granular flows by DEM".POWDER TECHNOLOGY 239.239(2013):115-127.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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