Journal
INTERNATIONAL JOURNAL OF MULTIPHASE FLOW
Volume 84, Issue -, Pages 1-8Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmultiphaseflow.2016.04.015
Keywords
Rotating drum; Density-induced granular segregation; Modified density ratio; Interstitial fluid density; Stokes number
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Funding
- Ministry of Science and Technology, R.O.C. [MOST 103-2218-E-008-004-MY2, MOST 103-2221-E-008-042-MY3]
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We experimentally investigated the effects of interstitial fluid density and viscosity on density-induced granular segregation in a rotating drum. Image processing and a particle-tracking method were used for determining the segregation index and dynamic properties of granular materials. The results indicate that the interstitial fluid density has a crucial role in density-induced granular segregation. A dimensionless factor was defined for quantifying the effect of interstitial fluid density on density-induced granular segregation. The segregation intensity increased as the interstitial fluid viscosity increased. In addition, the Stokes number associated with density-induced granular segregation was discussed in this study. (C) 2016 Elsevier Ltd. All rights reserved.
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