Characterizing regime transitions in a bubble column with internals
文献类型：期刊论文
| 作者 | Guan, Xiaoping1,3; Yang, Ning2,3 |
| 刊名 | AICHE JOURNAL
 |
| 出版日期 | 2021-01-21 |
| 页码 | 15 |
| 关键词 | bubble column flow regime internals pressure fluctuation structures |
| ISSN号 | 0001-1541 |
| DOI | 10.1002/aic.17167 |
| 英文摘要 | Effects of internals on flow regimes are systematically investigated in a lab-scale bubble column (BC) through six approaches: total gas holdup, drift-flux, standard deviation, fractal analysis, chaos analysis and wavelet analysis. With increasing internals-covered cross-sectional area (CSA), these methods give various value of the first transitional superficial gas velocity, as different scales of structures are detected to characterize regime transition. While internals are found to have marginal effect on total gas holdup, significant change in gas-holdup structure is discovered, showing a decrease in large-bubbles holdup and an increase in small-bubbles holdup in transitional and churn-turbulent regimes. We propose a novel approach based on wavelet analysis to demarcate the boundaries among micro-, meso-, and macro-scales. The energy fraction of these representative scales identifies two transitional velocities, suggesting that internals advance the advent of first transition and delay the second one. The operating window of transitional regime is, therefore, remarkably extended. |
| 资助项目 | National Key Research and Development Program of China[2017YFE0106500] ; National Natural Science Foundation of China[21808222] ; National Natural Science Foundation of China[21925805] ; National Natural Science Foundation of China[91634203] ; National Natural Science Foundation of China[91834303] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000609283800001 |
| 出版者 | WILEY |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/43210]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Yang, Ning |
| 作者单位 | 1.Chinese Acad Sci, Innovat Acad Green Mfg, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guan, Xiaoping,Yang, Ning. Characterizing regime transitions in a bubble column with internals[J]. AICHE JOURNAL,2021:15. |
| APA | Guan, Xiaoping,&Yang, Ning.(2021).Characterizing regime transitions in a bubble column with internals.AICHE JOURNAL,15. |
| MLA | Guan, Xiaoping,et al."Characterizing regime transitions in a bubble column with internals".AICHE JOURNAL (2021):15. |
入库方式： OAI收割
来源：过程工程研究所
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