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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
发表期刊POWDER TECHNOLOGY
ISSN0032-5910
卷号327页码:70-78
摘要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.
关键词Fluidization Coarse Particle Terminal Velocity Fine Particle Holdup Binary Mixture
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.1016/j.powtec.2017.12.038
收录类别SCI
语种英语
关键词[WOS]BUBBLING FLUIDIZED-BEDS ; LAGRANGIAN HYBRID MODEL ; GAS-PARTICLE FLOWS ; FINE PARTICLES ; CFD SIMULATION ; DRAG MODEL ; DENSE BED ; COAL ; SEGREGATION ; SIZE
WOS研究方向Engineering
WOS类目Engineering, Chemical
项目资助者National Natural Science Foundation of China(21325628) ; State Key Development Program for Basic Research of China (973 Program)(2015CB251402)
WOS记录号WOS:000425562000007
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/24059
专题多相复杂系统国家重点实验室
作者单位1.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
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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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