3D CFD simulation of a circulating fluidized bed with on-line adjustment of mechanical valve

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	3D CFD simulation of a circulating fluidized bed with on-line adjustment of mechanical valve
	Liu, Cenfan 1,2; Zhao, Mingzhao 3; Wang, Wei 1; Li, Jinghai 1
刊名	CHEMICAL ENGINEERING SCIENCE
	2015-12-01
卷号	137 期号:DEC 页码:646-655
关键词	CFD Simulation Fluidization Meso-scale EMMS Sliding mesh
ISSN号	0009-2509
英文摘要	Past 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.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	SOLID RISER FLOWS ; MULTISCALE CFD ; NUMERICAL-SIMULATION ; 2-FLUID MODEL ; MASS-TRANSFER ; PART II ; CHOKING ; HYDRODYNAMICS ; EQUATIONS ; BOILER
收录类别	SCI
语种	英语
WOS记录号	WOS:000361772400060
公开日期	2015-12-27
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19581]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.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
推荐引用方式 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.