Different scenarios of shrinking surface soap bubbles
| Autor: | Laurent Courbin, Mattéo Clerget, Alexandre Delvert, Pascal Panizza |
|---|---|
| Přispěvatelé: | Institut de Physique de Rennes (IPR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Surface (mathematics)
Physics [PHYS]Physics [physics] Soap bubble Bubble Airflow General Physics and Astronomy Spherical cap Mechanics 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics Bernoulli's principle Volume (thermodynamics) 0103 physical sciences 010306 general physics Body orifice ComputingMilieux_MISCELLANEOUS |
| Zdroj: | American Journal of Physics American Journal of Physics, American Association of Physics Teachers, 2021, 89 (3), pp.244-252. ⟨10.1119/10.0002348⟩ American Journal of Physics, 2021, 89 (3), pp.244-252. ⟨10.1119/10.0002348⟩ |
| ISSN: | 0002-9505 |
| Popis: | International audience; We discuss a simple experiment investigating the shrinkage of surface soap bubbles sitting on a thin solid plate with a circular orifice located under the apex of the bubble. We identify three different shrinking regimes, the occurrence of which depends on a combination of key parameters that include the ratio between initial bubble and orifice sizes and physicochemical properties of the fluid system. For low-viscosity liquids and/or large ratios, a bubble remains quasi-hemispherical as shrinking proceeds. In contrast, for liquids with sufficiently large viscosities and/or small geometric ratios, a bubble seeks the shape of a spherical cap while the air inside it escapes through the orifice. In this case, shrinking proceeds with a bubble foot that either recedes over time or does not move for the largest viscosities and/or smallest ratios. We use basic physical arguments to rationalize the three identified regimes and to explain the shrinking dynamics. Specifically, this model which captures observations and measurements is based on Bernoulli's principle for the air flow, volume conservation, and a friction law that accounts for viscous dissipation at the moving bubble foot. (C) 2021 American Association of Physics Teachers. |
| Databáze: | OpenAIRE |
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