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Journal Articles Physical Review Fluids Year : 2023

Depressurization-induced drop breakup through bubble growth

Abstract

Drop breakup is often associated with violent impacts onto targets or fast inner bubble growth consecutive to phase change. We report on a well-controlled drop breakup experiment where bubble growth is triggered by the decrease of the ambient pressure. The drop initially sits on a textured hydrophobic surface at controlled temperature, and a bubble grows from the center of the liquid-solid interface. We find a transition from top-breakup to triple-line breakup depending on the initial contact angle of the drop. A minimal model based on inertial dynamics and constant bubble pressure is proposed. It quantitatively captures the growth of the bubble and the distinction between top or triple-line breakup. However, the model only provides an upper bound for the breakup time.
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Dates and versions

hal-04211609 , version 1 (19-09-2023)

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Christophe Pirat, Cécile Cottin-Bizonne, Choongyeop Lee, Stella M.M. Ramos, Olivier Pierre-Louis. Depressurization-induced drop breakup through bubble growth. Physical Review Fluids, 2023, 8 (9), ⟨10.1103/PhysRevFluids.8.L091601⟩. ⟨hal-04211609⟩
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