Dynamic evolution of oil droplet population in non-Newtonian swirling flow field
文献类型：期刊论文
| 作者 | Yang, Lele2; Li, Bin2; Zhang, Ke2; Huang, Chengyu2; Li, Peng1 |
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2025-09-01 |
| 卷号 | 37期号:9页码:18 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0287962 |
| 通讯作者 | Li, Peng(lipeng@imech.ac.cn) |
| 英文摘要 | Polymer flooding is widely applied in offshore oil recovery, but the resulting non-Newtonian, high-viscosity mixtures pose challenges for rapid oil-water separation in compact vane-type swirl separators. To investigate the dynamic evolution of oil droplet clusters in such complex flows and improve separation efficiency, this study developed a coupled simulation model integrating the Eulerian multiphase model, power-law rheological model, population balance model, and Reynolds stress model turbulence model. The model captures the breakup and coalescence behavior of oil droplets in non-Newtonian swirling flow fields under varying polymer viscosity coefficient, rheological index, inlet liquid velocity, and inlet oil-phase concentration. The results show that increasing the polymer viscosity coefficient leads to larger average droplet diameters (D32, D90, D5) across the pipe section, but a gradual decrease in centerline D32. A lower rheological index reduces average D32 and D5, but increases centerline D32 and slightly increases average D90. As inlet liquid velocity rises, average D32 increases, while centerline D32 and D90 first rise then fall, peaking at 1.2 m/s; D5 decreases steadily. Higher inlet oil-phase concentration enhances collision frequency, resulting in an overall increase in droplet sizes. These findings elucidate the interaction between rheology and flow conditions in governing droplet cluster dynamics within swirling flows, thereby enabling the directional optimization of swirl-vane separators for non-Newtonian fluids. |
| WOS关键词 | CFD-PBM SIMULATION ; BUBBLE BREAKUP ; 2-PHASE FLOW ; SEPARATION ; HYDROCYCLONE ; COALESCENCE ; MODEL |
| 资助项目 | Key Technologies Program of Nansha District ; National Natural Science Foundation of China[52571381] ; National Natural Science Foundation of China[12502203] ; [2023ZD011] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001571547200010 |
| 资助机构 | Key Technologies Program of Nansha District ; National Natural Science Foundation of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/104050]  |
| 专题 | 中国科学院力学研究所 |
| 通讯作者 | Li, Peng |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.South China Univ Technol, Sch Civil Engn & Transportat, Guangzhou 510641, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Lele,Li, Bin,Zhang, Ke,et al. Dynamic evolution of oil droplet population in non-Newtonian swirling flow field[J]. PHYSICS OF FLUIDS,2025,37(9):18. |
| APA | Yang, Lele,Li, Bin,Zhang, Ke,Huang, Chengyu,&Li, Peng.(2025).Dynamic evolution of oil droplet population in non-Newtonian swirling flow field.PHYSICS OF FLUIDS,37(9),18. |
| MLA | Yang, Lele,et al."Dynamic evolution of oil droplet population in non-Newtonian swirling flow field".PHYSICS OF FLUIDS 37.9(2025):18. |
入库方式： OAI收割
来源：力学研究所
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