Dynamics of a spherical colloid at a liquid interface: A lattice Boltzmann study - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physics of Fluids Année : 2021

Dynamics of a spherical colloid at a liquid interface: A lattice Boltzmann study

Résumé

We study the dynamics of a spherical colloidal particle pulled along the fluid-fluid interface using lattice Boltzmann (LB) simulations. We consider an interface with a finite width and include both the effects of the thermodynamics of the interface and the particle wetting, characterized by the contact angle h between the particle surface and the interface, in addition to the viscosity ratio k between the two fluids. We characterize the particle dynamics by applying a constant pulling force along the interface and measure both the translational and the rotational dynamics as a function of the contact angle and the viscosity ratio. We observe that the hydrodynamic drag is reduced and the particle rotation is increased when the particle resides more in the low viscosity fluid, in agreement with previous hydrodynamic theories. We also study the case where the particle rotation is suppressed, and find an overall increase of the drag coefficient.
Fichier principal
Vignette du fichier
POF21-AR-LBM2021-00720-3.pdf (863.94 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03224088 , version 1 (11-05-2021)

Identifiants

Citer

Harinadha Gidituri, Alois Würger, Kevin Stratford, Juho Lintuvuori. Dynamics of a spherical colloid at a liquid interface: A lattice Boltzmann study. Physics of Fluids, 2021, ⟨10.1063/5.0047530⟩. ⟨hal-03224088⟩

Collections

CNRS LOMA ANR
62 Consultations
136 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More