中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
The simulations of annulus-core structure in CFB

文献类型:期刊论文

作者Ouyang, J; Li, JH; Sun, GG
刊名CHINESE JOURNAL OF CHEMICAL ENGINEERING
出版日期2004-02-01
卷号12期号:1页码:27-32
关键词simulation two-phase flow particle-trajectory model fluidization random force
ISSN号1004-9541
其他题名Chin. J. Chem. Eng.
中文摘要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.
英文摘要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.
WOS标题词Science & Technology ; Technology
类目[WOS]Engineering, Chemical
研究领域[WOS]Engineering
关键词[WOS]DISCRETE PARTICLE SIMULATION ; FLUIDIZED-BED ; 2-PHASE FLOW ; DYNAMICS
收录类别SCI
原文出处://WOS:000220243400004
语种英语
WOS记录号WOS:000220243400004
公开日期2013-11-05
版本出版稿
源URL[http://ir.ipe.ac.cn/handle/122111/5019]  
专题过程工程研究所_研究所(批量导入)
作者单位1.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
推荐引用方式
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.

入库方式: OAI收割

来源:过程工程研究所

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