Investigating binary granular mixing in a rotating drum using ultrafast X-ray computed tomography

• DOI: 10.1016/j.powtec.2024.119964
• Publication Date: 2024-06-03T15:41:54Z
• Authors: Theodoros Nestor ...; Martina Bieberle; Frank Barthel; Uwe Hampel; Gregory Lecrivain
• Keywords: X-ray microtomography

The transient mixing dynamics of an initially segregated binary granular system in a half-filled rotating drum are experimentally investigated. consists spherical beads having identical size. density ratio between the two phases is 2.8. With its ability to scan three-dimensional opaque systems with high frequency, ultrafast X-ray computed tomography used capture and steady-state segregation bulk. also compared those at circular end-wall caps, which have been captured camera. results show axial migration denser particles towards bulk and, more importantly, second-order overshooting radial index, tend increase Froude number. will find application industrial systems, where rapid occurs. We believe presented data can serve as validation for future simulations focusing on formation patterns