2025/12/19 by David Luce, Luce, David, Adrien Gans +5
Physics and Astronomy · Engineering · #Dust and Plasma Wave Phenomena #Granular flow and fluidized beds #Nonlinear Photonic Systems
paper · doi:10.48550/arxiv.2512.17686
We experimentally measure paticle acceleration within the bulk during the discharge of a granular silo. We highlight the existence of a deceleration wave emerging at the outlet level near the dead zone and propagates toward the top of the medium. The wave emission frequency is extracted from spatiotemporal diagrams of the Eulerian instantaneous acceleration profiles. Surprisingly, we find that this frequency decreases with the cohesion of the medium and is independent of the outlet size.