Knowledge Management System Of Institute of process engineering,CAS
| The simulations of annulus-core structure in CFB | |
| Alternative Title | Chin. J. Chem. Eng. |
| Ouyang, J; Li, JH; Sun, GG | |
| 2004-02-01 | |
| Source Publication | CHINESE JOURNAL OF CHEMICAL ENGINEERING
 |
| ISSN | 1004-9541 |
| Volume | 12Issue:1Pages:27-32 |
| Abstract | 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.; 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. |
| Keyword | Simulation Two-phase Flow Particle-trajectory Model Fluidization Random Force |
| Subtype | Article |
| WOS Headings | Science & Technology ; Technology |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | DISCRETE PARTICLE SIMULATION ; FLUIDIZED-BED ; 2-PHASE FLOW ; DYNAMICS |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| WOS ID | WOS:000220243400004 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/5019 |
| Collection | 研究所（批量导入） |
| Affiliation | 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 |
| 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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| TheSimulationsofAnnu（502KB） | 限制开放 | CC BY-NC-SA | Application Full Text | |||
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