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3D CFD simulation of a circulating fluidized bed with on-line adjustment of mechanical valve
Liu, Cenfan1,2; Zhao, Mingzhao3; Wang, Wei1; Li, Jinghai1
2015-12-01
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume137Issue:DECPages:646-655
AbstractPast computational fluid dynamics (CFD) simulations on circulating fluidized bed (CFB) are all based on static geometries. To better understand the real operating performance of CFBs and make the simulation closer to virtual experiment, this work is to introduce on-line adjustment of solids flow rate via a mechanical valve in simulation. The two-fluid model (TFM) is used as the governing equations, for which the solids stress is closed by using the kinetic theory of granular flow and the drag is closed by using the EMMS/matrix scheme. The sliding mesh model is used to mimic the dynamic change of the opening or closing of the valve. And its effects on the flow behavior are studied by investigating the variation of axial voidage profile and solids flux in the riser under different solids inventories. The simulation results are in qualitative agreement with experimental observation, as detailed in the literature (Li et al., 1998. Chem. Eng. Sci. 53, 3367-3379). This work can be expected to be a starting point for the virtual process engineering, the next paradigm of CFD simulation. (C) 2015 Elsevier Ltd. All rights reserved.
KeywordCfd Simulation Fluidization Meso-scale Emms Sliding Mesh
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ces.2015.07.006
Indexed BySCI
Language英语
WOS KeywordSOLID RISER FLOWS ; MULTISCALE CFD ; NUMERICAL-SIMULATION ; 2-FLUID MODEL ; MASS-TRANSFER ; PART II ; CHOKING ; HYDRODYNAMICS ; EQUATIONS ; BOILER
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000361772400060
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19581
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Sichuan Univ, Sch Chem Engn, Chengdu 610065, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Liu, Cenfan,Zhao, Mingzhao,Wang, Wei,et al. 3D CFD simulation of a circulating fluidized bed with on-line adjustment of mechanical valve[J]. CHEMICAL ENGINEERING SCIENCE,2015,137(DEC):646-655.
APA Liu, Cenfan,Zhao, Mingzhao,Wang, Wei,&Li, Jinghai.(2015).3D CFD simulation of a circulating fluidized bed with on-line adjustment of mechanical valve.CHEMICAL ENGINEERING SCIENCE,137(DEC),646-655.
MLA Liu, Cenfan,et al."3D CFD simulation of a circulating fluidized bed with on-line adjustment of mechanical valve".CHEMICAL ENGINEERING SCIENCE 137.DEC(2015):646-655.
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