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Article Dans Une Revue Physical Review Fluids Année : 2020

Three-dimensional direct numerical simulations of the dynamics of retracting surfactant-laden ligaments

Cristian R. Constante-Amores
  • Fonction : Auteur
Lyes Kahouadji
  • Fonction : Auteur
Assen Batchvarov
  • Fonction : Auteur
Omar K. Matar
Seungwon Shin
  • Fonction : Auteur
Jalel Chergui
  • Fonction : Auteur

Résumé

The dynamics of ligaments retracting under the action of surface tension occurs in a multitude of natural and industrial applications, such as inkjet printing and atomisation. We perform fully three-dimensional, two-phase direct numerical simulations of the retraction dynamics with soluble surfactants. A full parametric study is performed using a hybrid interface-tracking/level-set method, which is utilised to treat the interface; this method is capable of capturing faithfully the topological transitions that are a feature of the flow over a certain range of ligament aspect ratios and Ohnesorge numbers. Our results demonstrate the delicate interplay between capillarity, modulated by the presence of surfactants, surfactant-induced Marangoni stresses, inertial and viscous effects. Particular attention is paid to the formation of vortices, which accompany the retraction process, and the influence of surfactant on the vortex dynamics.
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Dates et versions

hal-02610695 , version 1 (26-05-2020)
hal-02610695 , version 2 (24-01-2023)

Identifiants

Citer

Cristian R. Constante-Amores, Lyes Kahouadji, Assen Batchvarov, Omar K. Matar, Seungwon Shin, et al.. Three-dimensional direct numerical simulations of the dynamics of retracting surfactant-laden ligaments. Physical Review Fluids, 2020, 5, pp.084007. ⟨10.1103/PhysRevFluids.5.084007⟩. ⟨hal-02610695v1⟩
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