Breakup and coalescence behaviors of oil droplets in complex swirling flow system
文献类型：期刊论文
| 作者 | Chen, Hu1,2; Zhang, Jian1,2 ; Zhang J(张健)
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2025-03-01 |
| 卷号 | 37期号:3页码:13 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0255647 |
| 通讯作者 | Zhang, Jian(zhangjian@imech.ac.cn) |
| 英文摘要 | Droplet migration, coalescence, and breakup are common phenomena in cyclone systems. This study explores and provides insights into the breakup and coalescence behaviors of droplet groups in a swirling flow field through a combination of theoretical analyses and numerical simulations. A cylindrical cyclone with a tangential inlet was used to construct a stable swirling flow field, which was then comprehensively studied. The swirl intensity initially increased and then started decreasing, and the internal and external swirls coexisted. The breakup and coalescence behaviors of oil droplets in a complex swirling flow field were simulated, and their coalescence mode and breakup region were investigated in detail. Based on the energy-dissipation rate of the turbulence, the swirl-flow field was divided into strong- and weak-dissipation regions comprising overflow, separation, and underflow. Sauter mean diameter and energy-dissipation rate were evident in these: the overflow part exhibited a linear relationship, the separation part exhibited a quadratic linear relationship, the underflow part remained stable under low Reynolds numbers, and a quadratic linear relationship was observed at high Reynolds numbers. Based on the critical Weber number of droplets, a factor "g" is proposed to predict the droplet size, which has an exponential relationship with the Reynolds number. |
| WOS关键词 | TURBULENT ; DISPERSION ; COLLISION ; DROPS |
| 资助项目 | Youth Innovation Promotion Association of the Chinese Academy of Sciences10.13039/501100004739[2023000133] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[11972039] ; National Natural Science Foundation of China |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001439947300027 |
| 资助机构 | Youth Innovation Promotion Association of the Chinese Academy of Sciences10.13039/501100004739 ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; National Natural Science Foundation of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/100242]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 通讯作者 | Zhang, Jian |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Hu,Zhang, Jian,Zhang J. Breakup and coalescence behaviors of oil droplets in complex swirling flow system[J]. PHYSICS OF FLUIDS,2025,37(3):13. |
| APA | Chen, Hu,Zhang, Jian,&张健.(2025).Breakup and coalescence behaviors of oil droplets in complex swirling flow system.PHYSICS OF FLUIDS,37(3),13. |
| MLA | Chen, Hu,et al."Breakup and coalescence behaviors of oil droplets in complex swirling flow system".PHYSICS OF FLUIDS 37.3(2025):13. |
入库方式： OAI收割
来源：力学研究所
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