Collision of a sphere onto a wall coated with a liquid film

TL;DR

This study investigates the dynamics of a sphere colliding with a wall coated with viscoelastic and Newtonian liquids, providing insights into collision mechanisms relevant for natural and industrial particulate flows.

Contribution

It presents experimental observations of particle-wall collisions on coated surfaces with different liquid properties, enhancing understanding of collision behavior in complex fluids.

Findings

Collision behavior varies with liquid coating properties

Viscoelastic and Newtonian liquids influence rebound dynamics

Data aids in modeling particulate flow interactions

Abstract

Particle-particle and particle-wall collisions occur in many natural and industrial applications such as sedimentation, agglomeration, and granular flows. To accurately predict the behavior of particulate flows, fundamental knowledge of the mechanisms of a single collision is required. In this fluid dynamics video, particle-wall collisions onto a wall coated with 1.5% poly(ethylene-oxide) (PEO) (viscoelastic liquid) and 80% Glycerol and water (Newtonian liquid) are shown.