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Preprints, Working Papers, ... Year : 2023

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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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 and versions

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



Torstein Saeter, Christian Pedersen, Jacco Snoeijer, Thomas Salez, Andreas Carlson. Coalescence of elastic blisters filled with a viscous fluid. 2023. ⟨hal-04189833⟩


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