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Investigation of rice grain flow by multi-sphere particle model with rolling resistance

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Abstract

A multi-sphere (MS) model combined with rolling friction was considered for modelling elongated particles of irregular shape. The performance of the model was investigated by numerical simulations of the rice grain flow. A set of 5000 poly-dispersed milled rice grains were selected for the investigation purposes. They were characterised by a constant aspect ratio 3.5, while their maximum size was ranging from 6.4 to 7.3 mm. Filling and discharge flow as well as piling were simulated numerically with and without rolling resistance of particles. Simulation results were validated on the basis of experimental results. Good agreement of numerical and experimental results in terms of the discharge time and repose angle of the pile was reached simultaneously, when rolling resistance was introduced.

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Authors and Affiliations

  1. Vilnius Gediminas Technical University, Saulėtekio al.11, 10223, Vilnius, Lithuania

    Darius Markauskas & Rimantas Kačianauskas

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  1. Darius Markauskas
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  2. Rimantas Kačianauskas
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Correspondence to Darius Markauskas.

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Markauskas, D., Kačianauskas, R. Investigation of rice grain flow by multi-sphere particle model with rolling resistance. Granular Matter 13, 143–148 (2011). https://doi.org/10.1007/s10035-010-0196-5

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  • DOI: https://doi.org/10.1007/s10035-010-0196-5

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