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- Title
- Terminal velocity and mobile surface species in rising microbubbles
- Author(s)
- Manor, Ofer; Chan, Derek Y. C.
- Abstract
- The terminal velocity of rising microbubbles is a sensitive function of the bubble size and the surface concentration of mobile insoluble surfactants at the gas/liquid interface due to the Marangoni effect. With a model that allows for surface convection and diffusion, we delineate the regimes when the terminal velocity varies between the fully mobile (Hadamard-Rybczynski) and the fully immobile (Stokes) behavior at low Reynolds numbers. Results are presented in a universal form to facilitate conversion from bubble rise terminal velocity to trace amounts of surface contaminants.
- Publication Type
- Journal article
- Source
- Langmuir, Vol. 25, no. 16 (Aug 2009), pp. 8899-8902
- Publication Year
- 2009
- FOR Code(s)
- 0306 Physical Chemistry (Incl. Structural); 0904 Chemical Engineering
- Keyword(s)
- Hadamard-Rybczynski; Marangone effect; Microbubbles; Stokes-Reynolds; Surface active agents
- Publisher
- American Chemical Society
- Publisher URL
- http://dx.doi.org/10.1021/la901958t
- Copyright
- Copyright © 2009 American Chemical Society.
- ISSN
- 0743-7463
- Peer Reviewed
