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Segregation by Shaking in Cohesionless Granular Mixtures: Effects of Particle Size and Density

1995; Physical Society of Japan; Volume: 64; Issue: 2 Linguagem: Inglês

10.1143/jpsj.64.430

1347-4073

Toshiya Ohtsuki, Daisuke Kinoshita, Yoshikazu Takemoto, A. Hayashi,

Pickering emulsions and particle stabilization

Segregation by shaking in cohesionless granular mixtures is investigated by Molecular Dynamics simulations, where granular particles are modeled by inelastic hard discs. Temporal evolution of the height h of one tagged particle immersed in a set of monodisperse particles is pursued for various values of the particle size and density. The existence of the steady state independent of initial conditions is elucidated. The height h ∞ at the steady state is a continuously varying function of the particle size and density. With increasing size, h ∞ reaches a maximum after rapid increase, whereas h ∞ decreases with increasing density.