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Time dependence and density inversion in simulations of vertically oscillated granular layers.
- Source :
-
Physical Review E: Statistical, Nonlinear & Soft Matter Physics . Aug2012, Vol. 86 Issue 2-1, p1-4. 4p. - Publication Year :
- 2012
-
Abstract
- We study a layer of grains atop a plate which oscillates sinusoidally in the direction of gravity, using threedimensional, time-dependent numerical solutions of continuum equations to Navier-Stokes order as well as hard-sphere molecular dynamics simulations. For high accelerational amplitudes of the plate, the layer exhibits a steady-state "density inversion" in which a high-density portion of the layer is supported by a lower-density portion. At low accelerational amplitudes, the layer exhibits oscillatory time dependence that is strongly correlated to the motion of the plate. We show that continuum simulations yield results consistent with molecular dynamics results in both regimes. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15393755
- Volume :
- 86
- Issue :
- 2-1
- Database :
- Academic Search Index
- Journal :
- Physical Review E: Statistical, Nonlinear & Soft Matter Physics
- Publication Type :
- Academic Journal
- Accession number :
- 82053691
- Full Text :
- https://doi.org/10.1103/PhysRevE.86.020302