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GPU-based discrete element simulation on flow regions of flat bottomed cylindrical hopper
Peng, Li1,2; Xu, Ji1; Zhu, Qingshan1,2; Li, Hongzhong1,2; Ge, Wei1,2; Chen, Feiguo1; Ren, Xinxin1
2016-12-01
发表期刊POWDER TECHNOLOGY
ISSN0032-5910
卷号304期号:DEC页码:218-228
摘要

In this study, flow regions in flat bottomed cylindrical gravity-driven hoppers are investigated in terms of velocity and voidage distributions of particles via GPU-based DEM (discrete element method) simulation. For the first time, the hopper flow with steady discharge is described as nine regions which are essential and critical for better understanding of hopper flow. The variation of solid concentration is less than 1% in the transition flow region. The particle acceleration in the converging flow region decreases with increasing the height along hopper. The arch zone, which has the highest particle acceleration, can be divided into a vertical flow region and a centripetal flow region, based on the directions of partide velocities. The area of the vertical flow region and the centripetal flow region decreases with the-decrease of hopper outlet size, so fewer particles above these two regions flow acceleratedly to the outlet, resulting in the height reduction of the converging flow region and the transition flow region. (C) 2016 Elsevier B.V. All rights reserved.

关键词Discrete Element Method (Dem) Flow Regions Flat Bottomed Hopper Voidage Profiles Velocity Distribution
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.powtec.2016.08.029
收录类别SCI ; ISTP
语种英语
关键词[WOS]STATE GRANULAR FLOW ; SIZE SEGREGATION ; DISCHARGE ; STRESS ; DEM ; DYNAMICS ; SOLIDS ; FIELDS ; MODEL ; WALL
WOS研究方向Engineering
WOS类目Engineering, Chemical
WOS记录号WOS:000389394500024
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21840
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Peng, Li,Xu, Ji,Zhu, Qingshan,et al. GPU-based discrete element simulation on flow regions of flat bottomed cylindrical hopper[J]. POWDER TECHNOLOGY,2016,304(DEC):218-228.
APA Peng, Li.,Xu, Ji.,Zhu, Qingshan.,Li, Hongzhong.,Ge, Wei.,...&Ren, Xinxin.(2016).GPU-based discrete element simulation on flow regions of flat bottomed cylindrical hopper.POWDER TECHNOLOGY,304(DEC),218-228.
MLA Peng, Li,et al."GPU-based discrete element simulation on flow regions of flat bottomed cylindrical hopper".POWDER TECHNOLOGY 304.DEC(2016):218-228.
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