On the coalescence speed of bubbles

S. T. Thoroddsen; T. G. Etoh; K. Takehara; N. Ootsuka

doi:10.1063/1.1965692

On the coalescence speed of bubbles

S. T. Thoroddsen^*, T. G. Etoh, K. Takehara, N. Ootsuka

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

Two bubbles brought into contact will coalesce rapidly. We study experimentally the initial coalescence motions in the neck region connecting the two bubbles, using an ultrahigh-speed video camera. The air bubbles are grown in ethyl alcohol, at the ends of two opposing vertical needles, until they come into contact. The growth rate of the neck is measured and modeled with a capillary/inertial balance. The instantaneous profile in the neck forms a circular arc, with the ratio of the two principal radii of curvatures increasing linearly in time.

Original language	English (US)
Article number	071703
Pages (from-to)	1-4
Number of pages	4
Journal	Physics of Fluids
Volume	17
Issue number	7
DOIs	https://doi.org/10.1063/1.1965692
State	Published - Jul 2005
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Fluid Flow and Transfer Processes
Computational Mechanics

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10.1063/1.1965692

Cite this

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AB - Two bubbles brought into contact will coalesce rapidly. We study experimentally the initial coalescence motions in the neck region connecting the two bubbles, using an ultrahigh-speed video camera. The air bubbles are grown in ethyl alcohol, at the ends of two opposing vertical needles, until they come into contact. The growth rate of the neck is measured and modeled with a capillary/inertial balance. The instantaneous profile in the neck forms a circular arc, with the ratio of the two principal radii of curvatures increasing linearly in time.

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On the coalescence speed of bubbles

Abstract

ASJC Scopus subject areas

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