Depressurization-induced drop breakup through bubble growth

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 hydrophob...

Full description

Saved in:
Bibliographic Details
Published in:Physical review fluids 2023-09, Vol.8 (9), Article L091601
Main Authors: Pirat, Christophe, Cottin-Bizonne, Cécile, Lee, Choongyeop, Ramos, Stella M. M., Pierre-Louis, Olivier
Format: Article
Language:English
Subjects:
Fluid Dynamics
Physics
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:2469-990X
2469-990X
DOI:10.1103/PhysRevFluids.8.L091601