Numerical simulation of the dynamics of a multicomponent droplet in water using the phase-field model of TrioCFD code

Mirantsoa-Aimé Rasolofomanana (1, 2) , Romain Le Tellier (1, 2) , Hervé Henry (3)

1 SMTA - Service Mesures et modélisation des Transferts et des Accidents graves
2 IRESNE - Institut de recherche sur les systèmes nucléaires pour la production d'énergie bas carbone (CEA - DES)
3 LPMC - Laboratoire de Physique de la Matière Condensée

In this paper, we present the capability of "phase_field" model of TrioCFD code to capture coupled mass transfer and hydrodynamic phenomena. For this purpose, we consider a droplet composed of one miscible and one immiscible components released in a 2D rectangular domain filled with water. Mass transfer occurs between the miscible element and the water, which leads to a variation of the density of each phase. The Boussinesq approximation for a multicomponent system is used to define the density law. The results found are in good agreement with the dynamics described from an experimental study and present a significant validation of such a model using coupled Cahn-Hilliard/Navier-Stokes equations.

Domaines: Mécanique des fluides [physics.class-ph]

Mirantsoa-Aimé Rasolofomanana, Romain Le Tellier, Hervé Henry. Numerical simulation of the dynamics of a multicomponent droplet in water using the phase-field model of TrioCFD code. ICMF 2023. - 11th International Conference on Multiphase Flow, Apr 2023, Kobe, Japan. ⟨cea-04086313⟩