Revisiting viscoelastic liquid films flowing down a slippery substrate: Linear and nonlinear viscoelastic waves
文献类型：期刊论文
| 作者 | Song, Zhiwei2; Ding ZJ(丁子敬)1,2
|
| 刊名 | PHYSICA D-NONLINEAR PHENOMENA
 |
| 出版日期 | 2025-03-01 |
| 卷号 | 473页码:15 |
| 关键词 | Viscoelastic film Navier slip condition Nonlinear waves |
| ISSN号 | 0167-2789 |
| DOI | 10.1016/j.physd.2025.134554 |
| 通讯作者 | Ding, Zijing(z.ding@hit.edu.cn) |
| 英文摘要 | This paper revisits the flow of a viscoelastic film on a slippery substrate (Phys. Rev. Fluids 7 (6), 064007, 2022) using the Navier-slip boundary condition, tau xz = lambda u (lambda represents the friction coefficient of the substrate). Here, tau xz represents the total tangential shear stress, comprised of both a viscous and an elastic component. A model equation for the film thickness is derived based on the long-wave theory. The study investigates both the linear and nonlinear dynamics of the film flow. It reveals that the presence of a slippery substrate and viscoelasticity promote the instability of linear viscoelastic waves. Additionally, they affect the speed and height of nonlinear viscoelastic waves. Our present study suggests that neglecting the elastic component of tau xz at the slippery wall could result in an overestimation of the linear stability threshold while underestimating the speed and height of nonlinear waves. |
| 分类号 | 一类 |
| WOS关键词 | POLYMER-MELT ; FLUID-FLOW ; LONG WAVES ; WALL-SLIP ; STABILITY ; EQUATION |
| 资助项目 | NSFC, China[12102109] |
| WOS研究方向 | Mathematics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001424880300001 |
| 资助机构 | NSFC, China |
| 其他责任者 | 丁子敬 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/100140]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China 2.Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Song, Zhiwei,Ding ZJ. Revisiting viscoelastic liquid films flowing down a slippery substrate: Linear and nonlinear viscoelastic waves[J]. PHYSICA D-NONLINEAR PHENOMENA,2025,473:15. |
| APA | Song, Zhiwei,&丁子敬.(2025).Revisiting viscoelastic liquid films flowing down a slippery substrate: Linear and nonlinear viscoelastic waves.PHYSICA D-NONLINEAR PHENOMENA,473,15. |
| MLA | Song, Zhiwei,et al."Revisiting viscoelastic liquid films flowing down a slippery substrate: Linear and nonlinear viscoelastic waves".PHYSICA D-NONLINEAR PHENOMENA 473(2025):15. |
入库方式： OAI收割
来源：力学研究所
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