Granular segregation under vertical tapping

We present extensive Molecular Dynamics simulations on species segregation in a granular mixture subject to vertical taps. We discuss how grain properties, e.g., size, density, friction, as well as, shaking properties, e.g., amplitude and frequency, affect such a phenomenon. Both Brazil Nut Effect (...

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Bibliographic Details
Main Authors Ciamarra, M. Pica, De Vizia, M. D, Fierro, A, Tarzia, M, Coniglio, A, Nicodemi, M
Format Journal Article
LanguageEnglish
Published 13.01.2006
Subjects
Physics - Soft Condensed Matter
Physics - Statistical Mechanics
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DOI10.48550/arxiv.cond-mat/0601284

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Summary:We present extensive Molecular Dynamics simulations on species segregation in a granular mixture subject to vertical taps. We discuss how grain properties, e.g., size, density, friction, as well as, shaking properties, e.g., amplitude and frequency, affect such a phenomenon. Both Brazil Nut Effect (larger particles on the top, BN) and the Reverse Brazil Nut Effect (larger particles on the bottom, RBN) are found and we derive the system comprehensive ``segregation diagram'' and the BN to RBN crossover line. We also discuss the role of friction and show that particles which differ only for their frictional properties segregate in states depending on the tapping acceleration and frequency.
DOI:10.48550/arxiv.cond-mat/0601284