Abstract
In this study the deformation of liquid-air interface of Newtonian or Boger fluids filled between two parallel-plates geometry was investigated when two surfaces were separated at a constant speed. The interface between the fluid and air showed either stable or unstable deformation depending on experimental conditions. Repeated experiments for a wide range of experimental conditions revealed that the deformation mode could be classified into three types: 'stable region', 'fingering' and 'cavitation'. The experimental condition for the mode of deformation was plotted in a capillary number vs. Deborah number phase plane. It has been found that the elasticity of Boger fluids destabilize the interface deformation. On the other hand, the elasticity suppresses the formation and growth of cavities.
| Original language | English |
|---|---|
| Pages (from-to) | 219-226 |
| Number of pages | 8 |
| Journal | Korea Australia Rheology Journal |
| Volume | 16 |
| Issue number | 4 |
| Publication status | Published - 2004 Dec |
Keywords
- Boger fluid
- Cavitation
- Pressure sensitive adhesive
- Pull-off test
- Tack
- Viscous fingering
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics