CNCS Center for Nonlinear and Complex Systems
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Publications [#245605] of Robert P. Behringer

Papers Published

  1. Tennakoon, SGK; Kondic, L; Behringer, RP, Onset of flow in a horizontally vibrated granular bed: Convection by horizontal shearing, Epl (Europhysics Letters), vol. 45 no. 4 (February 1999), pp. 470-475, IOP Publishing, ISSN 0295-5075 [doi]
    (last updated on 2019/02/20)

    Abstract:
    We present experimental observations of the onset of flow for horizontally vibrated 3D granular systems. For accelerations Γ above Γ*, the top layers of granular material flow, leading to convection with motion both parallel and transverse to the shaking; the lower part of the layer moves with the shaker in solid body motion. With increasing Γ, more of the layer becomes liquefied. The initial bifurcation is backward, but a small amount of fluidization by gas flow lifts the hysteresis. A new convective mechanism, which we explore both experimentally and computationally, associated with horizontal shearing at the walls, is identified as the mechanism driving the transverse convective flow.