Open AccessThe onset of heterogeneity in the pinch-off of suspension drops
Author(s) -
Virgile Thiévenaz,
Alban Sauret
Publication year - 2022
Publication title -
proceedings of the national academy of sciences of the united states of america
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.2120893119
Subject(s) - nozzle , mechanics , suspension (topology) , pinch , drop (telecommunication) , capillary action , singularity , physics , materials science , classical mechanics , thermodynamics , mathematics , geometry , computer science , telecommunications , homotopy , nuclear physics , pure mathematics
Significance The pinch-off of a liquid drop extruded from a nozzle is a canonical situation that involves a series of self-similar regimes ending in a finite-time singularity. This configuration allows for exploring capillary flows over a large range of scales. In the case of suspension drops, the presence of particles breaks the self-similarity by introducing a length scale that can be much larger than the particle diameter. This length scale is a signature of the heterogeneities and delimitates a regime, in which a continuum approach of a suspension can be used from a regime where the discrete nature of the particles is involved.