Stability of gravity-driven viscous films flowing down a soft cylinder
The Rayleigh-Plateau instability occurs when a liquid film flows down a cylindrical surface. Using long-wave theory and stability analysis, we show that this instability can be modulated by coating the cylindrical surface with a thin layer of soft solids. In particular, we find that the elasticity of the soft layer can cause the film flow from being absolutely to convectively unstable. Our findings are also verified by transient numerical solutions of the full asymptotic model.
Authors
- Youchuang Chao (ORCID: https://orcid.org/0000-0001-8495-786X)
- Lailai Zhu (ORCID: https://orcid.org/0000-0002-3443-0709)
- Zijing Ding (ORCID: https://orcid.org/0000-0001-6756-0182)
- Juntao Chang (ORCID: https://orcid.org/0000-0003-0019-2068)
- Ziao Wang (ORCID: https://orcid.org/0000-0002-3633-8463)
- Tiantian Kong (ORCID: https://orcid.org/0000-0001-7768-7275)
Institutions
- National University of Singapore (SG)
- Shenzhen University (CN)
- Harbin Institute of Technology (CN)
Publication Details
- Journal
- Physical Review Fluids
- Published
- 2024-09-09
- DOI
- https://doi.org/10.1103/physrevfluids.9.094001
- Citations
- 6
- Primary Topic
- Fluid Dynamics and Thin Films
- Type
- article
- Field-Weighted Citation Impact
- 2.25
Funders
- National Natural Science Foundation of China
- Fundamental Research Funds for the Central Universities