Sinking a Granular Raft

Abstract : We report experiments that yield new insights on the behavior of granular rafts at an oil-water interface. We show that these particle aggregates can float or sink depending on dimensionless parameters taking into account the particle densities and size and the densities of the two fluids. We characterize the raft shape and stability and propose a model to predict its shape and maximum length to remain afloat. Finally we find that wrinkles and folds appear along the raft due to compression by its own weight, which can trigger destabilization. These features are characteristics of an elastic instability, which we discuss, including the limitations of our model.
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Article dans une revue
Physical Review Letters, American Physical Society, 2017, 118 (10), pp.108001. 〈10.1103/PhysRevLett.118.108001〉
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Soumis le : mardi 25 avril 2017 - 12:26:52
Dernière modification le : vendredi 31 août 2018 - 09:25:44
Document(s) archivé(s) le : mercredi 26 juillet 2017 - 13:44:35


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Suzie Protière, Christophe Josserand, Jeffrey M. Aristoff, Howard A. Stone, Manouk Abkarian. Sinking a Granular Raft. Physical Review Letters, American Physical Society, 2017, 118 (10), pp.108001. 〈10.1103/PhysRevLett.118.108001〉. 〈hal-01513620〉



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