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Elasticity in Bubble Rupture.
Daniele Tammaro1, Rossana Pasquino1, Massimiliano Maria Villone1
1Department of Chemical, Materials, and Manufacturing Engineering , University of Napoli Federico II , P.le Tecchio 80 , 80125 Napoli , Italy.
Langmuir : the ACS Journal of Surfaces and Colloids
|April 18, 2018
Summary
The film retraction of viscoelastic bubbles depends on elastic energy stored during inflation. This stored energy, influenced by inflation history, impacts bubble rupture dynamics and film recovery speed.
Area of Science:
- Fluid dynamics
- Rheology
- Materials science
Background:
- Newtonian bubble rupture is governed by surface tension, inertia, and viscosity.
- Viscoelastic liquids introduce elastic forces, complicating bubble film dynamics.
Purpose of the Study:
- To experimentally investigate viscoelastic bubble film retraction.
- To determine how inflation history affects stored elastic energy and retraction velocity.
- To develop a model explaining the underlying physical mechanisms.
Main Methods:
- Experimental investigation of bubble inflation and puncture.
- Utilizing various viscoelastic liquids.
- Performing direct numerical simulations.
- Developing a heuristic model.
Main Results:
- Stored elastic energy in the bubble film is dependent on the inflation rate and history.
- Higher stored elastic energy leads to altered film retraction velocities upon bubble puncture.
- Experimental findings are supported by numerical simulations.
Conclusions:
- The elastic force significantly influences viscoelastic bubble film retraction.
- Bubble inflation history is a critical factor determining stored elastic energy and subsequent dynamics.
- A heuristic model successfully explains the observed physical phenomena.
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