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Publications [#281180] of Peter K. Haff

Papers Published

  1. Haff, PK; Werner, BT, Computer simulation of the mechanical sorting of grains, Powder Technology, vol. 48 no. 3 (January, 1986), pp. 239-245, Elsevier BV, ISSN 0032-5910 [0032-5910(86)80048-1], [doi]
    (last updated on 2023/06/01)

    Abstract:
    A two-dimensional system of inelastic frictional disks all of equal diameter save one was studied by computer simulation. A single large disk was placed on the bottom of a container and covered by 30 smaller disks. When the container was agitated to induce a shear motion in the disk assembly, the large particle showed a tendency to rise toward the surface. This sorting process was mediated by shear-driven rotational motion, the large grain rolling up on top of neighboring small grains. The grain-grain friction coefficient μ is a critical parameter in this kind of sorting process, since if μ is too small, the large grain cannot get sufficient purchase to roll without slipping. © 1986.

    Keywords:
    CLASSIFIERS - Computer Simulation;GRANULAR MATERIALS - Friction;FLOW OF FLUIDS - Granular Materials;