Hydrodynamic equivalent diameter for clusters in heterogeneous gas-solid flow
文献类型：期刊论文
| 作者 | Xu, GW; Kato, K |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 1999-06-01 |
| 卷号 | 54期号:12页码:1837-1847 |
| ISSN号 | 0009-2509 |
| 关键词 | gas-particle flow fluidization multi-scale analysis cluster modeling |
| 其他题名 | Chem. Eng. Sci. |
| 中文摘要 | This paper is devoted to establishing a simple correlation calculating the equivalent diameter of clusters in gas-solid how. Three different kinds of cluster sizes were distinguished in accordance with the measuring techniques: (1) vertical length measured with optical fiber or capacitance probes; (2) cross-sectional size determined with image analysis of graphs taken by video camera or other suitable detection systems; and (3) hydrodynamic equivalent diameter of clusters derived from differential pressure drop (solid concentration) via appropriate fluid dynamic models. The hydrodynamic equivalent cluster diameter correlated in hydrodynamic modeling was generalized as the diameter of spheres (uniform in size) having the same total volume as actual dusters (not a single cluster), which is subject to hydrodynamic equations, such as force balance, for clusters. It was demonstrated that hydrodynamic equivalent cluster diameter is close to cross-sectional size, but much less than vertical length of clusters experimentally measured. The correlation reported in Xu and Li (1998) (Chem. Engng Sci., vol. 63, p. 1349) was found to be capable of predicting hydrodynamic equivalent cluster diameters of heterogeneous gas-solid systems for both Geldart A and Geldart B particles, which was then further simplified for facilitating its practical use. (C) 1999 Elsevier Science Ltd. All rights reserved. |
| 英文摘要 | This paper is devoted to establishing a simple correlation calculating the equivalent diameter of clusters in gas-solid how. Three different kinds of cluster sizes were distinguished in accordance with the measuring techniques: (1) vertical length measured with optical fiber or capacitance probes; (2) cross-sectional size determined with image analysis of graphs taken by video camera or other suitable detection systems; and (3) hydrodynamic equivalent diameter of clusters derived from differential pressure drop (solid concentration) via appropriate fluid dynamic models. The hydrodynamic equivalent cluster diameter correlated in hydrodynamic modeling was generalized as the diameter of spheres (uniform in size) having the same total volume as actual dusters (not a single cluster), which is subject to hydrodynamic equations, such as force balance, for clusters. It was demonstrated that hydrodynamic equivalent cluster diameter is close to cross-sectional size, but much less than vertical length of clusters experimentally measured. The correlation reported in Xu and Li (1998) (Chem. Engng Sci., vol. 63, p. 1349) was found to be capable of predicting hydrodynamic equivalent cluster diameters of heterogeneous gas-solid systems for both Geldart A and Geldart B particles, which was then further simplified for facilitating its practical use. (C) 1999 Elsevier Science Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | CIRCULATING FLUIDIZED-BEDS ; VOIDAGE PROFILES ; BEHAVIOR ; CHOKING ; MODEL ; SIZE |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000080007600008 |
| 公开日期 | 2013-11-15 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/5958]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Acad Sinica, Inst Chem Met, Beijing 100080, Peoples R China 2.Gunma Univ, Dept Biol & Chem Engn, Kiryu, Gumma 3768515, Japan |
| 推荐引用方式 GB/T 7714 | Xu, GW,Kato, K. Hydrodynamic equivalent diameter for clusters in heterogeneous gas-solid flow[J]. CHEMICAL ENGINEERING SCIENCE,1999,54(12):1837-1847. |
| APA | Xu, GW,&Kato, K.(1999).Hydrodynamic equivalent diameter for clusters in heterogeneous gas-solid flow.CHEMICAL ENGINEERING SCIENCE,54(12),1837-1847. |
| MLA | Xu, GW,et al."Hydrodynamic equivalent diameter for clusters in heterogeneous gas-solid flow".CHEMICAL ENGINEERING SCIENCE 54.12(1999):1837-1847. |
入库方式： OAI收割
来源：过程工程研究所
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