8 papers
Mixing induced by microswimmers as probed by mutual information
Yihong Shi, Yuto Hosaka, Andrej Vilfan +1
We investigate fluid mixing induced by microswimmers using mutual information as a global, information-theoretic measure of mixing efficiency. For a two-dimensional squirmer model…
Self-phoretic colloids in chiral active fluids
Michalis Chatzittofi, Yuto Hosaka, Andrej Vilfan +1
Autonomous and driven transport in chiral active fluids have been shown to exhibit features that cannot be accommodated within the classical formulation of fluid mechanics, due to…
Asymptotic limits of the axisymmetric solution of the Brinkman equation for a point force near a no-slip wall
Abdallah Daddi-Moussa-Ider, Andrej Vilfan
We derive the far-field and near-field solutions for the Green's function of a point force acting perpendicular to a no-slip wall in a Brinkman fluid, focusing on the regime where…
Stokes drag on a sphere in a three-dimensional anisotropic porous medium
Andrej Vilfan, Bogdan Cichocki, Jeffrey C. Everts
We study the hydrodynamic drag force exerted on a sphere in a static anisotropic porous medium. This problem is analysed using the Brinkman-Debye-Bueche equations with an axisymmet…
Information-optimal mixing at low Reynolds number
Luca Cocconi, Yihong Shi, Andrej Vilfan
Mutual information between particle positions before and after mixing provides a universal assumption-free measure of mixing efficiency at low Reynolds number which accounts for th…
Hydrodynamic flow field and frictional resistance coefficient of a disk rotating steadily in a compressible fluid layer with odd viscosity on a rigid substrate
Abdallah Daddi-Moussa-Ider, Yuto Hosaka, Elsen Tjhung +1
We analyze the hydrodynamics of a rotating disk in a two-dimensional compressible fluid layer with odd viscosity. Unlike conventional fluids, odd viscosity introduces a radial flow…