Density-induced granular segregation in a slurry rotating drum

Chun Chung Liao, Hung Wen Lan, Shu San Hsiau

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


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.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalInternational Journal of Multiphase Flow
StatePublished - 1 Sep 2016


  • Density-induced granular segregation
  • Interstitial fluid density
  • Modified density ratio
  • Rotating drum
  • Stokes number


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