GIDITURI, Harinadha; WÜRGER, Alois; STRATFORD, Kevin; LINTUVUORI, Juho

doi:10.1063/5.0047530

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

GIDITURI, Harinadha
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

WÜRGER, Alois
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

STRATFORD, Kevin

Langue

Article de revue

Ce document a été publié dans

Physics of Fluids. 2021-05-11

American Institute of Physics

Résumé en anglais

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.< Réduire

Mots clés en anglais

Colloidal particle

contact angle

wetting

Lattice-Boltzmann Method (LBM)

drag force

torque

DOI

http://dx.doi.org/10.1063/5.0047530

Project ANR

Electrodynamical diffuse layers - ANR-19-CE30-0012
Guidage des particules artificielles auto-propulsées - ANR-19-CE06-0012

Origine

Importé de hal

Unités de recherche

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798