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Article Dans Une Revue Physical Review Letters Année : 2024

Coalescence of elastic blisters filled with a viscous fluid

Torstein Saeter
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Christian Pedersen
Jacco Snoeijer
Andreas Carlson
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Résumé

Pockets of viscous fluid coalescing beneath an elastic plate are encountered in a wide range of natural phenomena and engineering processes, spanning across scales. As the pockets merge, a bridge is formed with a height increasing as the plate relaxes. We study the spatiotemporal dynamics of such an elasto-hydrodynamic coalescence process by combining experiments, lubrication theory and numerical simulations. The bridge height exhibits an exponential growth with time, which corresponds to a self-similar solution of the bending-driven thin-film equation. We address this unique self-similarity and the self-similar shape of the bridge, both of which are corroborated in numerical simulations and experiments.
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Dates et versions

hal-04189833 , version 1 (29-08-2023)

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Torstein Saeter, Christian Pedersen, Jacco Snoeijer, Thomas Salez, Andreas Carlson. Coalescence of elastic blisters filled with a viscous fluid. Physical Review Letters, 2024, 132, pp.074001. ⟨hal-04189833⟩

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