Hydrodynamic study on magnetized fluidized beds with Geldart-B magnetizable particles

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	Hydrodynamic study on magnetized fluidized beds with Geldart-B magnetizable particles
	Zhu, Quanhong 1,2; Li, Hongzhong 1; Zhu, Qingshan 1; Li, Jun 1; Zou, Zheng 1
刊名	POWDER TECHNOLOGY
	2014-12-01
卷号	268 期号:DEC 页码:48-58
关键词	Hydrodynamic Magnetized fluidized bed Magnetizable particle Flow regime Bubble
ISSN号	0032-5910
其他题名	Powder Technol.
中文摘要	When Geldart-B magnetizable particles are fluidized under the simultaneous influence of the gravitational field and the-magnetic field, there appear several flow regimes with different hydrodynamic behaviors. The present study focused on the hydrodynamics in the magnetized fluidized bed (MFB) flow regime. The applied magnetic field was axial, uniform, and steady; with Geldart-B iron particles as bed material experiments were conducted in both 2D and 3D beds. According to the gas-solid flow hydrodynamics, the MFB flow regime could be further divided into two distinguishable sub-regimes: magnetized-bubbling regime and channel-bubbling regime. In the channel-bubbling sub-regime, fluidization quality deteriorated due to the channel formation. In the magnetized-bubbling sub-regime, bubble sizes decreased while bubble frequency increased with increasing magnetic field intensities; fluidization quality was gradually improved. Meanwhile, bubbles were severely suppressed in the lateral direction, causing the change in bubble shape from nearly round to elliptic. Several reasons for both bubble size reduction and bubble shape change were analyzed. In addition, a new operational phase diagram was drawn to provide a panoramic view of the fluidization behaviors of Geldart-B magnetizable particles under the action of uniform magnetic fields. (C) 2014 Elsevier B.V. All rights reserved.
英文摘要	When Geldart-B magnetizable particles are fluidized under the simultaneous influence of the gravitational field and the-magnetic field, there appear several flow regimes with different hydrodynamic behaviors. The present study focused on the hydrodynamics in the magnetized fluidized bed (MFB) flow regime. The applied magnetic field was axial, uniform, and steady; with Geldart-B iron particles as bed material experiments were conducted in both 2D and 3D beds. According to the gas-solid flow hydrodynamics, the MFB flow regime could be further divided into two distinguishable sub-regimes: magnetized-bubbling regime and channel-bubbling regime. In the channel-bubbling sub-regime, fluidization quality deteriorated due to the channel formation. In the magnetized-bubbling sub-regime, bubble sizes decreased while bubble frequency increased with increasing magnetic field intensities; fluidization quality was gradually improved. Meanwhile, bubbles were severely suppressed in the lateral direction, causing the change in bubble shape from nearly round to elliptic. Several reasons for both bubble size reduction and bubble shape change were analyzed. In addition, a new operational phase diagram was drawn to provide a panoramic view of the fluidization behaviors of Geldart-B magnetizable particles under the action of uniform magnetic fields. (C) 2014 Elsevier B.V. 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]	FIELD ASSISTED FLUIDIZATION ; NONMAGNETIC PARTICLES ; FERROMAGNETIC PARTICLES ; MAGNETOFLUIDIZED BEDS ; UNIFIED APPROACH ; STABILIZATION ; BEHAVIOR ; SIMULATION ; ADMIXTURE ; MIXTURES
收录类别	SCI
原文出处	://WOS:000343852700005
语种	英语
WOS记录号	WOS:000343852700005
公开日期	2014-12-01
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/11698]
专题	过程工程研究所_研究所（批量导入）
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
推荐引用方式 GB/T 7714	Zhu, Quanhong,Li, Hongzhong,Zhu, Qingshan,et al. Hydrodynamic study on magnetized fluidized beds with Geldart-B magnetizable particles[J]. POWDER TECHNOLOGY,2014,268(DEC):48-58.
APA	Zhu, Quanhong,Li, Hongzhong,Zhu, Qingshan,Li, Jun,&Zou, Zheng.(2014).Hydrodynamic study on magnetized fluidized beds with Geldart-B magnetizable particles.POWDER TECHNOLOGY,268(DEC),48-58.
MLA	Zhu, Quanhong,et al."Hydrodynamic study on magnetized fluidized beds with Geldart-B magnetizable particles".POWDER TECHNOLOGY 268.DEC(2014):48-58.