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Wave formation in the gravity‐driven low‐Reynolds number flow of two liquid films down an inclined plane
Physics of Fluids ( IF 4.1 ) Pub Date : 1998-06-04 , DOI: 10.1063/1.858714
KangPing Chen 1
Affiliation  

Wave formation in the gravity‐driven low‐Reynolds number flow of two liquid films down an inclined plane is studied by a linear stability analysis. Wavy motion can appear due to an instability of either the fluid–fluid interface or the fluid‐air free surface. It is shown that the flow is always unstable and wavy motion can occur when the less viscous layer is in the region next to the wall for any Reynolds number and any finite interface and surface tensions. Stability can be achieved for the configuration with the more viscous component adjacent to the wall in the presence of interfacial tension when Reynolds number is small enough.

中文翻译:

重力驱动的低雷诺数的两个液膜在倾斜平面上的波形成

重力驱动的低雷诺数中的波形成 在两个 液膜通过线性稳定性分析研究了向下倾斜的平面。由于不稳定 流体界面或流体空气 自由表面。 结果表明 总是不稳定的,而当 粘性的 层位于墙旁边的任何区域 雷诺数 以及任何有限接口和 表面张力。 通过更多的配置可以实现稳定性 粘性的 当存在界面张力时,与壁相邻的组件 雷诺数 足够小。
更新日期:2020-03-04
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