Abstract
The effects of an insoluble surfactant on the motion of a drop or bubble as it is driven by a pressure gradient through a capillary tube is investigated numerically. We find that a drop in a straight capillary tube can either approach a steady-state shape or develop a re-entrant cavity at its rear. For a gas bubble moving through a constricted capillary tube, we find that snap-off can occur and surfactants enhance the snap-off process. The effects of the parameters on the dynamics of bubble snap-off are illustrated and discussed.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 381-410 |
| Number of pages | 30 |
| Journal | Journal of fluid Mechanics |
| Volume | 337 |
| DOIs | |
| State | Published - Apr 25 1997 |
ASJC Scopus subject areas
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Applied Mathematics