Multi-scale analysis of gas-liquid interaction and CFD simulation of gas-liquid flow in bubble columns
文献类型：期刊论文
| 作者 | Yang, Ning1; Wu, Zongying1,2; Chen, Jianhua1,3; Wang, Yuhua1,3; Li, Jinghai1 |
| 刊名 | CHEMICAL ENGINEERING SCIENCE
 |
| 出版日期 | 2011-07-15 |
| 卷号 | 66期号:14页码:3212-3222 |
| 关键词 | Bubble columns Hydrodynamics Multiphase flow Simulation CFD Multi-scale |
| ISSN号 | 0009-2509 |
| 通讯作者 | Yang, N |
| 英文摘要 | The ratio of effective drag coefficient to bubble diameter is of critical importance for CFD simulation of gas-liquid flow in bubble columns. In this study, a novel model is proposed to calculate the ratio on the basis of the Dual-Bubble-Size (DBS) model. The motivation of the study is that a stability condition reflecting the compromise between different dominant mechanisms can serve for a closure in addition to mass and momentum conservative constraints, and the interphase momentum transfer should be related to different paths of energy dissipation. With the DBS model, we can first offer a physical interpretation on macro-scale regime transition via the shift of global minimum point of micro-scale energy dissipation from one potential trough to the other. Then the proposed drag model is integrated into a CFD simulation. Prior to this integration, we investigate the respective effects of bubble diameter and correction factor and found that the effect of bubble diameter is limited, whereas the correction factor due to the bubble swarm effect is eminent and appropriate correction factor has to be selected for different correlations of standard drag efficient to be in accord with experiments. By contrast, the DBS drag model can well predict the radial gas holdup distribution, the total gas holdup as well as the two-phase flow field without the need to adjust model parameters, showing its great potential and advantage in understanding the complex nature of multi-scale structure of gas-liquid flow in bubble columns. (C) 2011 Elsevier 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] | STABILITY CONDITION ; REGIME TRANSITION ; COMPLEX-SYSTEMS ; FLUIDIZED-BED ; MODEL ; DYNAMICS ; SIZE |
| 收录类别 | SCI ; ISTP |
| 语种 | 英语 |
| WOS记录号 | WOS:000291475000015 |
| 公开日期 | 2013-11-05 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4864]  |
| 专题 | 过程工程研究所_多相复杂系统国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 2.Xi An Jiao Tong Univ, Dept Chem Engn, Xian 710049, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Ning,Wu, Zongying,Chen, Jianhua,et al. Multi-scale analysis of gas-liquid interaction and CFD simulation of gas-liquid flow in bubble columns[J]. CHEMICAL ENGINEERING SCIENCE,2011,66(14):3212-3222. |
| APA | Yang, Ning,Wu, Zongying,Chen, Jianhua,Wang, Yuhua,&Li, Jinghai.(2011).Multi-scale analysis of gas-liquid interaction and CFD simulation of gas-liquid flow in bubble columns.CHEMICAL ENGINEERING SCIENCE,66(14),3212-3222. |
| MLA | Yang, Ning,et al."Multi-scale analysis of gas-liquid interaction and CFD simulation of gas-liquid flow in bubble columns".CHEMICAL ENGINEERING SCIENCE 66.14(2011):3212-3222. |
入库方式： OAI收割
来源：过程工程研究所
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