The influence of surfactants on the creeping motion of bubbles

✍ Scribed by R.E. Davis; Andreas Acrivos

• Publisher: Elsevier Science
• Year: 1966
• Tongue: English
• Weight: 387 KB
• Volume: 21
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(66)80017-9

✦ Synopsis

A simple model is proposed for the creeping motion of a bubble contaminated with an "insoluble" surface-active agent. The existence of a stagnant cap over the rear of the bubble is taken for granted, and the cap size and associated bubble drag are then computed theoretically, as functions of the surface pressure at which the contaminant film collapses. The model, which employs no adjustable parameters, is consistent with experimental observations and, in particular, explains the success of the empirical correlation relating the bubble drag to the Bond number.