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Simulation of heterogeneous structure in a circulating fluidized-bed riser by combining the two-fluid model with the EMMS approach
文献类型：期刊论文
| 作者 | Yang, N; Wang, W; Ge, W; Wang, LN; Li, JH |
| 刊名 | INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
 |
| 出版日期 | 2004-09-01 |
| 卷号 | 43期号:18页码:5548-5561 |
| 关键词 | gas-solid flow discrete particle simulation radial voidage profiles drag coefficient numerical-simulation mesoscale structures 2-phase flow systems hydrodynamics clusters |
| ISSN号 | 0888-5885 |
| 其他题名 | Ind. Eng. Chem. Res. |
| 中文摘要 | To consider the critical effect of mesoscale structure on the drag coefficient, this paper presents a drag model based on the energy-minimization multiscale (EMMS) approach. The proposed structure parameters are obtained from the EMMS model, and then the average drag coefficient can be calculated from the structure parameters and further incorporated into the two-fluid model to simulate the gas-solid flow in a circulating fluidized-bed riser. Simulation results indicate that the simulated flow structures are different for the EMMS-based drag model and the hybrid model using the Wen and Yu correlation and the Ergun equation. The former shows its improvement in predicting the solids entrainment rate, the mesoscale heterogeneous structure involving clusters or strands, and the radial and axial voidage distributions. The simulation results support the idea that the average drag coefficient is an important factor for the two-fluid model and suggest that the EMMS approach could be used as a kind of multiscale closure law for drag coefficient. |
| 英文摘要 | To consider the critical effect of mesoscale structure on the drag coefficient, this paper presents a drag model based on the energy-minimization multiscale (EMMS) approach. The proposed structure parameters are obtained from the EMMS model, and then the average drag coefficient can be calculated from the structure parameters and further incorporated into the two-fluid model to simulate the gas-solid flow in a circulating fluidized-bed riser. Simulation results indicate that the simulated flow structures are different for the EMMS-based drag model and the hybrid model using the Wen and Yu correlation and the Ergun equation. The former shows its improvement in predicting the solids entrainment rate, the mesoscale heterogeneous structure involving clusters or strands, and the radial and axial voidage distributions. The simulation results support the idea that the average drag coefficient is an important factor for the two-fluid model and suggest that the EMMS approach could be used as a kind of multiscale closure law for drag coefficient. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | GAS-SOLID FLOW ; DISCRETE PARTICLE SIMULATION ; RADIAL VOIDAGE PROFILES ; DRAG COEFFICIENT ; NUMERICAL-SIMULATION ; MESOSCALE STRUCTURES ; 2-PHASE FLOW ; SYSTEMS ; HYDRODYNAMICS ; CLUSTERS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000223648400016 |
| 公开日期 | 2013-11-05 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/5016]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | Chinese Acad Sci, Inst Proc Engn, Multiphase React Lab, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, N,Wang, W,Ge, W,et al. Simulation of heterogeneous structure in a circulating fluidized-bed riser by combining the two-fluid model with the EMMS approach[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2004,43(18):5548-5561. |
| APA | Yang, N,Wang, W,Ge, W,Wang, LN,&Li, JH.(2004).Simulation of heterogeneous structure in a circulating fluidized-bed riser by combining the two-fluid model with the EMMS approach.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,43(18),5548-5561. |
| MLA | Yang, N,et al."Simulation of heterogeneous structure in a circulating fluidized-bed riser by combining the two-fluid model with the EMMS approach".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 43.18(2004):5548-5561. |
入库方式： OAI收割
来源：过程工程研究所
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