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GPU-based discrete element simulation on flow stability of flat-bottomed hopper
Peng, Li1,2; Zou, Zheng1; Zhang, Libo1,2; Zhu, Qingshan1,2; Li, Hongzhong1,2
2018
发表期刊CHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
卷号26期号:1页码:43-52
摘要In this study, the flow stability of the flat-bottomed hopper was investigated via GPU-based discrete element method (DEM) simulation. With the material height inside the hopper reducing, the fluctuation of the flow rate indicates an unstable discharge. The flow regions of the unstable discharge were compared with that of the stable discharge, a key transformation zone, where the voidage showed the largest difference between unstable and stable discharge, was revealed. To identify the relevance of the key transformation zone and the hopper flow stability, the voidage variation of the key transformation zone with material height reducing was studied. A sharp increase in the voidage in the key transformation zone was considered to be the standard for judging the unstable hopper flow, and the 'Top-Bottom effect' of the hopper was defined, which indicated the hopper flow was unstable when the hopper only had the top area and the bottom area, because the voidage of particles in the top area and the bottom area were both variables. (C) 2017 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.
关键词Stability Discrete Element Method(Dem) Granular Flow Top-bottom Effect Flow Regions
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.cjche.2017.07.021
收录类别SCI
语种英语
关键词[WOS]STATE GRANULAR FLOW ; CYLINDRICAL HOPPER ; RECTANGULAR HOPPER ; WALL STRESS ; DEPENDENCE ; DISCHARGE ; SOLIDS ; FIELDS
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者State Key Development Program for Basic Research of China(2015CB251402) ; National Natural Science Foundation of China(21325628 ; 91334108)
WOS记录号WOS:000426042000004
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/24017
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Peng, Li,Zou, Zheng,Zhang, Libo,et al. GPU-based discrete element simulation on flow stability of flat-bottomed hopper[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2018,26(1):43-52.
APA Peng, Li,Zou, Zheng,Zhang, Libo,Zhu, Qingshan,&Li, Hongzhong.(2018).GPU-based discrete element simulation on flow stability of flat-bottomed hopper.CHINESE JOURNAL OF CHEMICAL ENGINEERING,26(1),43-52.
MLA Peng, Li,et al."GPU-based discrete element simulation on flow stability of flat-bottomed hopper".CHINESE JOURNAL OF CHEMICAL ENGINEERING 26.1(2018):43-52.
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