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Three-dimensional simulation of gas-solid flow in a fluidised bed with flexible ribbon particles
Wu, Kai1,2; Zhang, Erqiang2,3; Xu, Ji4; Yuan, Zhulin1; Zhu, Wenkui2; Li, Bin2; Wang, Le2; Luo, Dengshan2
2020-03-01
Source PublicationINTERNATIONAL JOURNAL OF MULTIPHASE FLOW
ISSN0301-9322
Volume124Pages:13
AbstractFluidisation is a widely used process in the industry as it offers high solid-gas contact efficiency and high heat and mass transfer, hence making it the unit operation of choice for drying. For instance, in the tobacco industry, drying of cut-tobacco is usually performed in fluidised beds. Unlike other particle materials, cut-tobacco exhibit ribbon-like morphology and are highly flexible. The high tendency of such particles to intertwine and form clusters could significantly influence the hydrodynamic characteristics and equipment performance. Therefore, it is of great significance to understand the dynamic behaviours of flexible ribbon particles in the fluidised bed. However, reported studies on such particles in the literature are scarce, and there is no large-scale numerical calculation for that matter. In this paper, the dynamic behaviours of flexible ribbon particles in a fluidised bed are investigated numerically using a two-way coupling of Discrete Element Method (DEM) and Computational fluid dynamics (CFD). A flexible ribbon chain model is used. The spring force constants is proposed and validated reasonably. Compared to other models, the flexible ribbon particle model provides better flexibility. It could also accurately reflect the flow properties of flexible ribbon particles to a certain extent. The effects of particle mass flow rate, superficial gas velocity and other process parameters on the particle dynamics in a fluidised bed are thoroughly studied in this paper. The numerical simulations are validated with experimental data, and the results show a very good agreement. (C) 2019 Elsevier Ltd. All rights reserved.
KeywordSpring constants Flexible ribbon particle Fluidised bed Dynamic behaviour
DOI10.1016/j.ijmultiphaseflow.2019.103181
Language英语
WOS KeywordFILAMENTOUS PARTICLES ; NUMERICAL-SIMULATION ; DYNAMIC SIMULATION ; TRANSVERSE SECTION ; SLENDER PARTICLES ; MOISTURE-CONTENT ; DEM SIMULATION ; FIBERS ; RISER ; MODEL
Funding ProjectNational Natural Science Foundation of China[51576046] ; National Natural Science Foundation of China[51306213] ; Science and Technology Plan Projects of Jiangsu Province[BY2015070-15] ; Key Lab of Tobacco Processing Technology of Zhengzhou Tobacco Research Institute[212016AA0300]
WOS Research AreaMechanics
WOS SubjectMechanics
Funding OrganizationNational Natural Science Foundation of China ; Science and Technology Plan Projects of Jiangsu Province ; Key Lab of Tobacco Processing Technology of Zhengzhou Tobacco Research Institute
WOS IDWOS:000514247100006
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/39547
Collection中国科学院过程工程研究所
Corresponding AuthorYuan, Zhulin; Zhu, Wenkui
Affiliation1.Southeast Univ, Sch Energy & Environm, Key Lab Energy Thermal Convers & Control, Minist Educ, Nanjing 210096, Jiangsu, Peoples R China
2.China Natl Tobacco Cor, Key Lab Tobacco Proc Technol, Zhengzhou Tobacco Res Inst, Zhengzhou 450001, Henan, Peoples R China
3.China Tobacco Shaanxi Ind Co Ltd, Technol Ctr, Baoji 721000, Shaanxi, Peoples R China
4.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Wu, Kai,Zhang, Erqiang,Xu, Ji,et al. Three-dimensional simulation of gas-solid flow in a fluidised bed with flexible ribbon particles[J]. INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,2020,124:13.
APA Wu, Kai.,Zhang, Erqiang.,Xu, Ji.,Yuan, Zhulin.,Zhu, Wenkui.,...&Luo, Dengshan.(2020).Three-dimensional simulation of gas-solid flow in a fluidised bed with flexible ribbon particles.INTERNATIONAL JOURNAL OF MULTIPHASE FLOW,124,13.
MLA Wu, Kai,et al."Three-dimensional simulation of gas-solid flow in a fluidised bed with flexible ribbon particles".INTERNATIONAL JOURNAL OF MULTIPHASE FLOW 124(2020):13.
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