2023/03/30 by Hiroyuki Ebata, S. Inagaki, Ebata, Hiroyuki +1
Engineering · Environmental Science · Materials Science · #Coastal wetland ecosystem dynamics #FOS: Physical sciences #Granular flow and fluidized beds #Pickering emulsions and particle stabilization #Soft Condensed Matter (cond-mat.soft)
paper · pdf · doi:10.48550/arxiv.2303.17145
openalex publication_date 2023/03/30 · openalex created_date 2023/04/05 · openalex updated_date 2026/07/28
When granular mixtures of different sizes are fluidized, each species spontaneously separates and condenses to form patterns. Although granular segregation has been extensively studied, the inability to directly observe the time evolution of the internal structure hinders the understanding of the mechanism of segregation dynamics driven by surface flow. In this study, we report rich band dynamics, including a self-replicating band, in a horizontally shaken granular mixture in a quasi-two-dimensional container where the granules formed steady surface waves. Direct observation of surface flow and segregated internal structure revealed that coupling among segregation, surface flow, and hysteresis in the fluidity of granules is key to understanding complex band dynamics.