1999/04/09 by C. Bizon, Bizon, C., Mark D. Shattuck +6
Engineering · Environmental Science · Physics and Astronomy · #FOS: Physical sciences #Geotechnical and Geomechanical Engineering #Granular flow and fluidized beds #Landslides and related hazards #Statistical Mechanics (cond-mat.stat-mech) #cond-mat.stat-mech
paper · pdf · doi:10.48550/arxiv.cond-mat/9904135
12 pages, 6 figures, 21 references
arxiv created 1999/04/09 · openalex publication_date 1999/04/09 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Simulations of volumetrically forced granular media in two dimensions produce s tates with nearly homogeneous density. In these states, long-range velocity correlations with a characteristic vortex structure develop; given sufficient time, the correlations fill the entire simulated area. These velocity correlations reduce the rate and violence of collisions, so that pressure is smaller for driven inelastic particles than for undriven elastic particles in the same thermodynamic state. As the simulation box size increases, the effects of veloc ity correlations on the pressure are enhanced rather than reduced.