| Energy mechanism for the instability of liquid jets with thermocapillarity | |
Sun, YuWen; Hu, KaiXin ; Chen QS(陈启生)
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| Corresponding Author | Hu, Kai-Xin([email protected]) |
| Source Publication | PHYSICS OF FLUIDS
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| 2023-09-01 | |
| Volume | 35Issue:9Pages:14 |
| ISSN | 1070-6631 |
| Abstract | Xu and Davis [J. Fluid Mech. 161, 1-25 (1985)] examined the stability of long axisymmetric liquid jet subjected to an axial temperature gradient, finding capillary, surface-wave, and hydrodynamic modes. They showed that capillary breakup can be retarded or even suppressed for a small Prandtl number (Pr< 1) and a large Biot number (Bi >= 1). In the present work, the energy mechanism is carried out for these three kinds of flow instabilities, and the mechanism of suppressing capillary breakup is clarified. When the Reynolds number (R-B) is not large, the work done by the pressure on the free surface (P-S) is the main energy source of the capillary instability. At small Pr and large Bi, the phase difference between the radial velocity and surface deformation increases with R-B, leading to the decrease in P-S, which prevents the occurrence of capillary breakup. Meanwhile, the work done by thermocapillary force becomes the main energy source, making hydrodynamic modes unstable. The perturbation flow fields are displayed, which shows that the temperature fluctuations of three modes differ from each other. |
| DOI | 10.1063/5.0166867 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001146152800003 |
| WOS Keyword | FLOW |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | National Natural Science Foundation of China[11872032] ; National Natural Science Foundation of China[12372247] ; Zhejiang Provincial Natural Science Foundation[LY21A020006] ; Ningbo Municipality Key Research and Development Program[2022Z213] |
| Funding Organization | National Natural Science Foundation of China ; Zhejiang Provincial Natural Science Foundation ; Ningbo Municipality Key Research and Development Program |
| Classification | 一类/力学重要期刊 |
| Ranking | 3 |
| Contributor | Hu, Kai-Xin |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/94328 |
| Collection | 微重力重点实验室 |
| Recommended Citation GB/T 7714 | Sun, YuWen,Hu, KaiXin,Chen QS. Energy mechanism for the instability of liquid jets with thermocapillarity[J]. PHYSICS OF FLUIDS,2023,35,9,:14.Rp_Au:Hu, Kai-Xin |
| APA | Sun, YuWen,Hu, KaiXin,&陈启生.(2023).Energy mechanism for the instability of liquid jets with thermocapillarity.PHYSICS OF FLUIDS,35(9),14. |
| MLA | Sun, YuWen,et al."Energy mechanism for the instability of liquid jets with thermocapillarity".PHYSICS OF FLUIDS 35.9(2023):14. |
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| File Name/Size | DocType | Version | Access | License | ||
| Jp2023A082.pdf（4759KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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