1993/02/02 by Gerald H. Ristow, G. Ristow, Ristow, G. +2
Engineering · Physics and Astronomy · #Condensed Matter (cond-mat) #FOS: Physical sciences #Granular flow and fluidized beds #NMR spectroscopy and applications #Quantum, superfluid, helium dynamics #cond-mat
paper · pdf · doi:10.48550/arxiv.cond-mat/9302005
7 pages, plain TeX
arxiv created 1993/02/02 · openalex publication_date 1993/02/02 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recent experiments by Baxter et al. showed the existence of density waves in granular material flowing out of a hopper. We show, using Molecular Dynamics Simulations, that this effect is a consequence of static friction and find that these density fluctuations follow a 1/f spectrum. The effect is enhanced when the opening angle of the hopper decreases.