Close-packed granular clusters: hydrostatics and persistent Gaussian fluctuations
نویسندگان
چکیده
منابع مشابه
Close - packed granular clusters : hydrostatics and persistent Gaussian fluctuations
Dense granular clusters often behave like macroparticles. We address this interesting phenomenon in a model system of inelastically colliding hard disks inside a circular box, driven by a thermal wall at zero gravity. Molecular dynamics simulations show a close-packed cluster of an almost circular shape, weakly fluctuating in space and isolated from the driving wall by a low-density gas. The de...
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Monodisperse granular flows often develop regions with hexagonal close packing of particles. We investigate this effect in a system of inelastic hard spheres driven from below by a "thermal" plate. Molecular dynamics simulations show, in a wide range of parameters, a close-packed cluster supported by a low-density region. Surprisingly, the steady-state density profile, including the close-packe...
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The local structure of liquid copper was determined using Steinhardt order parameters, with particular attention paid to icosahedral clusters. The positions of atoms were obtained from three sets of molecular dynamics simulations, with the forces obtained from: the Sutton-Chen (SC) potential, the Naval Research Laboratory total energy tight-binding (NRL-TB) method and the divide-and-conquer lea...
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ژورنال
عنوان ژورنال: Granular Matter
سال: 2007
ISSN: 1434-5021,1434-7636
DOI: 10.1007/s10035-007-0055-1