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Terminal Velocity and Mobile Surface Species in Rising Micro-Bubbles

journal contribution
posted on 2024-11-01, 10:13 authored by Ofer Manor, Derek Chan
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

History

Journal

Langmuir: The A C S Journal of Surfaces and Colloids

Volume

25

Issue

16

Start page

8899

End page

8902

Total pages

4

Publisher

American Chemical Soceity

Place published

United States

Language

English

Copyright

© 2009 American Chemical Society

Former Identifier

2006031150

Esploro creation date

2020-06-22

Fedora creation date

2015-01-16

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