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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
Source PublicationPOWDER TECHNOLOGY
ISSN0032-5910
Volume304Issue:DECPages:218-228
Abstract

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.

KeywordDiscrete Element Method (Dem) Flow Regions Flat Bottomed Hopper Voidage Profiles Velocity Distribution
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.powtec.2016.08.029
Indexed BySCI ; ISTP
Language英语
WOS KeywordSTATE GRANULAR FLOW ; SIZE SEGREGATION ; DISCHARGE ; STRESS ; DEM ; DYNAMICS ; SOLIDS ; FIELDS ; MODEL ; WALL
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000389394500024
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21840
Collection多相复杂系统国家重点实验室
Affiliation1.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
Recommended Citation
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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