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The simulations of annulus-core structure in CFB
Alternative TitleChin. J. Chem. Eng.
Ouyang, J; Li, JH; Sun, GG
2004-02-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume12Issue:1Pages:27-32
AbstractIn this paper, the stochastic particle-trajectory model is proposed for simulating the dynamic behavior of circulating fluidized bed (CFB). In our model, the motion of solid phase is obtained by calculating the individual particle trajectory while gas flow is obtained by solving the Navier-Stokes Equation including two-phase interaction. For the calculation of solid phase, the motion of each particle is decomposed into a collision process and a suspension process. In suspension process, the less important and/or unclear forces are described as a random force considering gravity, drag force and pressure gradient. As a result, the proposed model gives some numerical simulations of CFB. It indicates that the stochastic particle-trajectory model can be used to simulate qualitatively the annulus-core structure of CFB and the influences of stochastic factors cannot be ignored. In a CFB, the coupling of stochastic factors between two phases makes the radial voidage decreased. Moreover, the upward motion of particles is mitigated by both stochastic factors and turbulence between two phases.; In this paper, the stochastic particle-trajectory model is proposed for simulating the dynamic behavior of circulating fluidized bed (CFB). In our model, the motion of solid phase is obtained by calculating the individual particle trajectory while gas flow is obtained by solving the Navier-Stokes Equation including two-phase interaction. For the calculation of solid phase, the motion of each particle is decomposed into a collision process and a suspension process. In suspension process, the less important and/or unclear forces are described as a random force considering gravity, drag force and pressure gradient. As a result, the proposed model gives some numerical simulations of CFB. It indicates that the stochastic particle-trajectory model can be used to simulate qualitatively the annulus-core structure of CFB and the influences of stochastic factors cannot be ignored. In a CFB, the coupling of stochastic factors between two phases makes the radial voidage decreased. Moreover, the upward motion of particles is mitigated by both stochastic factors and turbulence between two phases.
KeywordSimulation Two-phase Flow Particle-trajectory Model Fluidization Random Force
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordDISCRETE PARTICLE SIMULATION ; FLUIDIZED-BED ; 2-PHASE FLOW ; DYNAMICS
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000220243400004
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5019
Collection研究所(批量导入)
Affiliation1.Northwestern Polytech Univ, Dept Math Appl, Xian 710072, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
3.Univ Petr, Dept Chem Engn, Beijing 100083, Peoples R China
Recommended Citation
GB/T 7714
Ouyang, J,Li, JH,Sun, GG. The simulations of annulus-core structure in CFB[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2004,12(1):27-32.
APA Ouyang, J,Li, JH,&Sun, GG.(2004).The simulations of annulus-core structure in CFB.CHINESE JOURNAL OF CHEMICAL ENGINEERING,12(1),27-32.
MLA Ouyang, J,et al."The simulations of annulus-core structure in CFB".CHINESE JOURNAL OF CHEMICAL ENGINEERING 12.1(2004):27-32.
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