Experimental and numerical study on dynamics of viscoelastic liquid cone in flow focusing
文献类型：期刊论文
| 作者 | Wang, Ming2; Mu, Kai2; Zhao, Chengxi2; Wu, Yanfeng2; Xu, Wenshuai1 ; He, Xiulil1; Si, Ting2; Xu WS(徐文帅)
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 36期号:9页码:10 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0226142 |
| 通讯作者 | Mu, Kai(mukai@ustc.edu.cn) |
| 英文摘要 | The effects of viscoelasticity on the stability and morphology of the liquid cone in liquid-liquid flow focusing are investigated experimentally and numerically. The particle tracers are utilized in experiments to visualize the flow fields, and the Oldroyd-B model is applied in numerical simulations to describe the viscoelastic characteristics of the liquid cone. Based on the quantitative analyses on the elastic stresses and forces inside the cone, the influence of viscoelasticity on the startup process of the liquid cone is first investigated. The stretching and shrinking stages of the viscoelastic cone are identified, and the startup process of the Newtonian cone is also studied for comparison. By considering the force balance at local jet position, a scaling analysis is proposed to give the criterion for the establishment of the stable cone, which indicates that the axial elastic stress can promote the cone stability. Upon a stable liquid cone, the influences of viscoelasticity on the interface profile and flow field of the cone are further analyzed, indicating that an increase in viscoelasticity leads to more shrinkage of the cone interface. The shrinkage of cone leads to the acceleration of focused liquid and thus the decrease in the recirculation flow size. This fundamental work provides scientific guidance for understanding the influences of viscoelasticity in flow focusing process, contributing to the industrial applications of microdroplets production. |
| WOS关键词 | HIGH WEISSENBERG NUMBER ; SIMULATION ; SOLVER |
| 资助项目 | National Key Research and Development Program of China10.13039/501100012166[2023YFB4603701] ; National Key Research and Development Program of China[12272372] ; National Key Research and Development Program of China[12027801] ; National Key Research and Development Program of China[12388101] ; National Natural Science Foundation of China[2018491] ; National Natural Science Foundation of China[2023477] ; Youth Innovation Promotion Association CAS[YSBR-087] ; Chinese Academy of Sciences Project for Young Scientists in Basic Research[YD2090002020] ; USTC Research Funds of the Double First-Class Initiative |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001313863800020 |
| 资助机构 | National Key Research and Development Program of China10.13039/501100012166 ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Chinese Academy of Sciences Project for Young Scientists in Basic Research ; USTC Research Funds of the Double First-Class Initiative |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96602]  |
| 专题 | 宽域飞行工程科学与应用中心 |
| 通讯作者 | Mu, Kai |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Univ Sci & Technol China, Dept Modern Mech, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Ming,Mu, Kai,Zhao, Chengxi,et al. Experimental and numerical study on dynamics of viscoelastic liquid cone in flow focusing[J]. PHYSICS OF FLUIDS,2024,36(9):10. |
| APA | Wang, Ming.,Mu, Kai.,Zhao, Chengxi.,Wu, Yanfeng.,Xu, Wenshuai.,...&徐文帅.(2024).Experimental and numerical study on dynamics of viscoelastic liquid cone in flow focusing.PHYSICS OF FLUIDS,36(9),10. |
| MLA | Wang, Ming,et al."Experimental and numerical study on dynamics of viscoelastic liquid cone in flow focusing".PHYSICS OF FLUIDS 36.9(2024):10. |
入库方式： OAI收割
来源：力学研究所
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