Partial coalescence of soap bubbles

We present the results of an experimental investigation of the merger of a soap bubble with a planar soap film. When gently deposited onto a horizontal film, a bubble may interact with the underlying film in such a way as to decrease in size, leaving behind a smaller daughter bubble with approximate...

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Bibliographic Details
Published in:Physics of fluids (1994) 2015-06, Vol.27 (6)
Main Authors: Pucci, G., Harris, D. M., Bush, J. W. M.
Format: Article
Language:English
Subjects:
Bubbles
Coalescing
Computational fluid dynamics
Computer simulation
Condensed Matter
Fluid dynamics
Fluid mechanics
Mechanics
Physics
Soft Condensed Matter
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Summary:We present the results of an experimental investigation of the merger of a soap bubble with a planar soap film. When gently deposited onto a horizontal film, a bubble may interact with the underlying film in such a way as to decrease in size, leaving behind a smaller daughter bubble with approximately half the radius of its progenitor. The process repeats up to three times, with each partial coalescence event occurring over a time scale comparable to the inertial-capillary time. Our results are compared to the recent numerical simulations of Martin and Blanchette [“Simulations of surfactant effects on the dynamics of coalescing drops and bubbles,” Phys. Fluids 27, 012103 (2015)] and to the coalescence cascade of droplets on a fluid bath.
ISSN:1070-6631
1089-7666
DOI:10.1063/1.4923212