Article Dans Une Revue Physical Review Letters Année : 2025

Emergence of capillary waves in miscible coflowing fluids

Résumé

We show that capillary waves can exist at the the boundary between miscible co-flowing fluids. We unveil that the interplay between transient interfacial stresses and confinement drives the progressive transition from the well-known inertial regime, characterized by a frequency independent wavenumber, k ∼ ω 0 , to a capillary wave scaling, k ∼ ω 2/3 , unexpected for miscible fluids. This allows us to measure the effective interfacial tension between miscible fluids and its rapid decay on time scales never probed so far, which we rationalize with a model going beyond square-gradient theories. Our work potentially opens a new avenue to measure transient interfacial tensions at the millisecond scale in a controlled manner.

Fichier principal
Vignette du fichier
Capillary_waves_merged.pdf (1.27 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-04930485 , version 1 (05-02-2025)

Licence

Identifiants

Citer

Alessandro Carbonaro, Giovanni Savorana, Luca Cipelletti, Rama Govindarajan, Domenico Truzzolillo. Emergence of capillary waves in miscible coflowing fluids. Physical Review Letters, 2025, 134 (5), pp.054001. ⟨10.1103/PhysRevLett.134.054001⟩. ⟨hal-04930485⟩
732 Consultations
454 Téléchargements

Altmetric

Partager

  • More