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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
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume26Issue:1Pages:43-52
Abstract

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.

KeywordStability Discrete Element Method(Dem) Granular Flow Top-bottom Effect Flow Regions
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.cjche.2017.07.021
Indexed BySCI
Language英语
WOS KeywordState Granular Flow ; Cylindrical Hopper ; Rectangular Hopper ; Wall Stress ; Dependence ; Discharge ; Solids ; Fields
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationState Key Development Program for Basic Research of China(2015CB251402) ; National Natural Science Foundation of China(21325628 ; 91334108)
WOS IDWOS:000426042000004
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24017
Collection多相复杂系统国家重点实验室
Affiliation1.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
Recommended Citation
GB/T 7714
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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