Marangoni-driven spreading and receding of a volatile droplet on a liquid layer - Archive ouverte HAL
Article Dans Une Revue Physical Review Fluids Année : 2023

Marangoni-driven spreading and receding of a volatile droplet on a liquid layer

Résumé

When releasing a droplet onto a distinct nonmiscible liquid layer, for positive spreading parameter S , a surface tension driven spreading arises. Here, for positive S , we report the reverse after the initial spreading phase: a secondary receding of the deposited volatile droplet. This behavior is found to result from the competition between two opposite effects: solutal and thermal Marangoni stresses, with the latter built from droplet's evaporation. To clarify the effects of evaporation-induced Marangoni, accurate infrared thermography tests are performed. These tests reveal a maximal temperature gradient at the droplet edge near the recession time. Also, universal scaling laws are proposed for the spreading dynamic of a law-viscous insoluble drop onto a more viscous oil, with droplet volume variation resulting from the evaporation and typical receding time. These predictions are successfully compared with experiments.
Fichier principal
Vignette du fichier
Jaberi_et_al_prf_2023.pdf (1.83 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04275792 , version 1 (20-11-2023)

Identifiants

Citer

Amin Jaberi, Gerald Debenest, Franck Plouraboué. Marangoni-driven spreading and receding of a volatile droplet on a liquid layer. Physical Review Fluids, 2023, 8 (7), pp.073601. ⟨10.1103/PhysRevFluids.8.073601⟩. ⟨hal-04275792⟩
90 Consultations
78 Téléchargements

Altmetric

Partager

More