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A numerical study of the bubble induced pressure fluctuation in gas-fluidized beds
Zhang, Yuli1,2,3; Xiao, Rui1; Ye, Mao2,3; Liu, Zhongmin2,3
KeywordBubble Size Pressure Fluctuation Fluidized Bed Euler-euler Model
Source PublicationPOWDER TECHNOLOGY
2017-06-01
DOI10.1016/j.powtec.2016.08.59
Volume314Pages:387-399
Indexed BySCI ; ISTP
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
WOS SubjectEngineering, Chemical
WOS Research AreaEngineering
WOS KeywordNONINTRUSIVE DETERMINATION ; OPTICAL PROBE ; SIZE ; FLOW ; HYDRODYNAMICS ; POLYETHYLENE ; PROPAGATION ; SIMULATION ; DYNAMICS ; COLUMNS
AbstractPressure fluctuation analysis has been widely accepted as an efficient way for bubble size estimation in fluidized beds since the local bubble induced pressure fluctuation, which is believed to be a function of bubble size, can be separated away from the global pressure waves. The spectral data decomposition method developed by van der Schaaf et al. (2002) Van der Schaaf et al. (2002) has been widely used in this regard. However, it has been found in various experimental studies that the proportionality constant between the reference data (obtained via measurements by various techniques or predicted by well-established correlations) and the estimated bubble size differs significantly in different applications. In this work we try to understand the scattered proportionality constants via a numerical study based on the Euler-Euler two-fluid model. The simulation results indicate that the local bubble induced pressure fluctuation is affected not only by bubble size, but also by the lateral distance between the rising bubble and detecting point, bubble shape, bed diameter, and bubble coalescence. Without consideration of these factors, the spectral data decomposition method is subject to large deviation for bubble size estimation. (C) 2016 Elsevier B.V. All rights reserved.
Language英语
WOS IDWOS:000401880700037
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/152280
Collection中国科学院大连化学物理研究所
Affiliation1.Southeast Univ, Sch Energy & Environm, Minist Educ, Key Lab Energy Thermal Convers & Control, Nanjing 210096, Jiangsu, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Natl Engn Lab MTO, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Yuli,Xiao, Rui,Ye, Mao,et al. A numerical study of the bubble induced pressure fluctuation in gas-fluidized beds[J]. POWDER TECHNOLOGY,2017,314:387-399.
APA Zhang, Yuli,Xiao, Rui,Ye, Mao,&Liu, Zhongmin.(2017).A numerical study of the bubble induced pressure fluctuation in gas-fluidized beds.POWDER TECHNOLOGY,314,387-399.
MLA Zhang, Yuli,et al."A numerical study of the bubble induced pressure fluctuation in gas-fluidized beds".POWDER TECHNOLOGY 314(2017):387-399.
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