Three-dimensional simulation of gas-solid flow in a fluidised bed with flexible ribbon particles

doi:10.1016/j.ijmultiphaseflow.2019.103181

	Three-dimensional simulation of gas-solid flow in a fluidised bed with flexible ribbon particles
	Wu, Kai 1,2; Zhang, Erqiang 2,3; Xu, Ji 4; Yuan, Zhulin 1; Zhu, Wenkui 2; Li, Bin 2; Wang, Le 2; Luo, Dengshan 2
刊名	INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
	2020-03-01
卷号	124 页码:13
关键词	Spring constants Flexible ribbon particle Fluidised bed Dynamic behaviour
ISSN号	0301-9322
DOI	10.1016/j.ijmultiphaseflow.2019.103181
英文摘要	Fluidisation 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.
资助项目	National 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关键词	FILAMENTOUS PARTICLES ; NUMERICAL-SIMULATION ; DYNAMIC SIMULATION ; TRANSVERSE SECTION ; SLENDER PARTICLES ; MOISTURE-CONTENT ; DEM SIMULATION ; FIBERS ; RISER ; MODEL
WOS研究方向	Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000514247100006
资助机构	National Natural Science Foundation of China ; Science and Technology Plan Projects of Jiangsu Province ; Key Lab of Tobacco Processing Technology of Zhengzhou Tobacco Research Institute
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/39546]
专题	中国科学院过程工程研究所
通讯作者	Yuan, Zhulin; Zhu, Wenkui
作者单位	1.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
推荐引用方式 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.