2025 CAP Congress / Congrès de l'ACP 2025

Avalanche dynamics in a 2D tumbling drum with frictionless, cohesive oil droplets

9 Jun 2025, 15:15

15m

Rm 212 (cap.47) (Arts Bldg., U.Sask.)

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle) Physics in Medicine and Biology / Physique en médecine et en biologie (DPMB-DPMB) (DPMB) M2-8 Dynamics and Detection: Tools for Measuring the Unseen in Health, Environment, and Materials | Dynamique et détection : outils pour mesurer l'invisible dans les domaines de la santé, de l'environnement et des matériaux (DPMB)

Speaker

Simaya Rosenbloom (McMaster University)

Description

The macroscopic behaviours of granular materials are heavily dependent on their microscopic interactions. We explore the dynamics of microscopic frictionless oil droplets with a well controlled cohesive interaction in a 2D tumbling drum. The disordered, bidisperse aggregate of droplets rearrange in the rotating drum quasi-statically. We observe the angle at which the granular aggregate begins to flow, and the angle to which the system settles, post-avalanche. We explore buoyancy force to contrast the response of poly-crystalline and disordered aggregates, as well as the effect of the strength of cohesion between droplets.