Knowledge Management System Of Institute of process engineering,CAS
| Flow behavior of granular material during funnel and mixed flow discharges: A comparative analysis | |
| Zhang, Dancheng1,2; Dong, Shijie1,3; Guo, Hui1,2; Yang, Xiaodong1,2; Cui, Lijie2; Liu, Xiaoxing1,2 | |
| 2022 | |
| Source Publication | POWDER TECHNOLOGY
 |
| ISSN | 0032-5910 |
| Volume | 396Pages:127-138 |
| Abstract | The drainage of granular assembly from a flat-bottomed silo can be in either funnel flow mode or mixed flow mode. The primary motivation of this work is to investigate whether there exist fundamental differences be-tween the rheological behavior of particles under these two discharge modes. The developments and evolutions of flowing zone and also the characteristics of particle velocity fluctuation during funnel and mixed flow dis-charges were analyzed and compared by performing 3D Discrete Element Method (DEM) simulations. For funnel flow discharge, the characteristic width of flowing zone at the early discharge state presented a clear history-dependent feature. For mixed flow discharge, the flowing zone sharply shrunk when the upper free surface of the material approached a critical height and the discharge mode then shifted to funnel flow mode. Discrete Fou-rier transform results demonstrate that resonant motion of particles appeared during both funnel and mixed flow discharges. The correlation analyses indicate that for these two flow modes, there both existed an intermediate region in the converging part of the flowing zone. Its upper boundary located at the position where the flowing zone started to converge along the vertical direction and was featured as the maximum particle compressive force. And its bottom boundary corresponded to the location of free-fall arch and acted as the source of the res-onant motion of particles. Our simulation results thus suggest that from the perspective of particle velocity fluc-tuation, there is no essential difference between granular flows under funnel and mixed discharge modes. (c) 2021 Elsevier B.V. All rights reserved. |
| Keyword | Discrete element method (DEM) Silo discharge Flow pattern Velocity fluctuation Resonance |
| DOI | 10.1016/j.powtec.2021.10.047 |
| Language | 英语 |
| WOS Keyword | DISCRETE ELEMENT METHOD ; SILO DISCHARGE ; WALL STRESSES ; GRAVITY FLOW ; DENSE ; SIMULATION ; DYNAMICS ; MODEL ; FLUCTUATIONS ; SYSTEMS |
| Funding Project | National Key Research and Development Program of China[2017YFE0300602] ; National Natural Science Foundation of China[21576265] ; National Natural Science Foundation of China[52076205] ; "Strategic Priority Research Program" of the Chinese Academy of Sciences[XDA21040402] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | National Key Research and Development Program of China ; National Natural Science Foundation of China ; "Strategic Priority Research Program" of the Chinese Academy of Sciences ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences |
| WOS ID | WOS:000718001000001 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/51009 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Liu, Xiaoxing |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.Tsinghua Univ, Dept Mech Engn, Beijing 100084, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang, Dancheng,Dong, Shijie,Guo, Hui,et al. Flow behavior of granular material during funnel and mixed flow discharges: A comparative analysis[J]. POWDER TECHNOLOGY,2022,396:127-138. |
| APA | Zhang, Dancheng,Dong, Shijie,Guo, Hui,Yang, Xiaodong,Cui, Lijie,&Liu, Xiaoxing.(2022).Flow behavior of granular material during funnel and mixed flow discharges: A comparative analysis.POWDER TECHNOLOGY,396,127-138. |
| MLA | Zhang, Dancheng,et al."Flow behavior of granular material during funnel and mixed flow discharges: A comparative analysis".POWDER TECHNOLOGY 396(2022):127-138. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment