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Usefulness of multi-solids pneumatic transport bed data for evaluation and validation of binary solids computational simulation models
Liu, Wenming1,2,3; Bi, Xiaotao T.1; Zhu, Qingshan2,3; Li, Hongzhong2
2018-03-01
Source PublicationPOWDER TECHNOLOGY
ISSN0032-5910
Volume327Pages:70-78
Abstract

The hydrodynamics of the binary mixture system in the multisolid pneumatic transport bed (MPTB), where a fine-particle laden gas flows through a coarse particle bed, was investigated by computational fluid dynamics (CFD) simulation. A pseudo-homogeneous method, which considers the gas phase and the fine particle phase as one pseudo-homogeneous dilute phase, was proposed to predict the coarse particle terminal velocity. In the second approach, the fine particle and coarse particle are treated separately, with the structure-based drag model developed in our previous study being used to simulate the coarse particle terminal velocity and fine particle holdup in the coarse particle bed. The simulation results of the two methods showed reasonable agreement with the experimental data under different operating conditions. As observed in the experiment, the terminal velocity of coarse particles decreases with increasing the fine particle flow rate, and the reduction is more significant for larger coarse particles. Besides, the fine particle holdup increases with the decrease of the diameter of coarse particles. These results demonstrated that the multisolid pneumatic transport system can serve as a simple binary system, with its coarse particle terminal velocity and fine particle holdup being used for the verification and validation of binary-particle CFB models. (C) 2017 Elsevier B.V. All rights reserved.

KeywordFluidization Coarse Particle Terminal Velocity Fine Particle Holdup Binary Mixture
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.powtec.2017.12.038
Indexed BySCI
Language英语
WOS KeywordBubbling Fluidized-beds ; Lagrangian Hybrid Model ; Gas-particle Flows ; Fine Particles ; Cfd Simulation ; Drag Model ; Dense Bed ; Coal ; Segregation ; Size
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China(21325628) ; State Key Development Program for Basic Research of China (973 Program)(2015CB251402)
WOS IDWOS:000425562000007
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/24059
Collection多相复杂系统国家重点实验室
Affiliation1.Univ British Columbia, Dept Chem & Biol Engn, 2360 East Mall, Vancouver, BC V6T 1Z3, Canada
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu, Wenming,Bi, Xiaotao T.,Zhu, Qingshan,et al. Usefulness of multi-solids pneumatic transport bed data for evaluation and validation of binary solids computational simulation models[J]. POWDER TECHNOLOGY,2018,327:70-78.
APA Liu, Wenming,Bi, Xiaotao T.,Zhu, Qingshan,&Li, Hongzhong.(2018).Usefulness of multi-solids pneumatic transport bed data for evaluation and validation of binary solids computational simulation models.POWDER TECHNOLOGY,327,70-78.
MLA Liu, Wenming,et al."Usefulness of multi-solids pneumatic transport bed data for evaluation and validation of binary solids computational simulation models".POWDER TECHNOLOGY 327(2018):70-78.
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