Experimental investigation of flow and segregation behaviour of bulk solids in silos under high gravity conditions

J. Mathews, V. P R Kasina, M. Combarros, W. Wu, J. F. Chen, A. Kwade, H. Schneider, J. Y. Ooi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Many researchers have investigated the flow and segregation behaviour in model scale experimental silos at normal gravity conditions. However it is known that the stresses experienced by the bulk solid in industrial silos are high when compared to model silos. Therefore it is important to understand the effect of stress level on flow and segregation behaviour and establish the scaling laws governing this behaviour. The objective of this paper is to understand the effect of gravity on the flow and segregation behaviour of bulk solids in a silo centrifuge model. The materials used were two mixtures composed of Polyamide and glass beads. The discharge of two bi-disperse bulk solids in a silo centrifuge model were recorded under accelerations ranging from 1g to 15g. The velocity distribution during discharge was evaluated using Particle Image Velocimetry (PIV) techniques and the concentration distribution of large and small particles were obtained by imaging processing techniques. The flow and segregation behaviour at high gravities were then quantified and compared with the empirical equations available in the literature.

Original languageEnglish
Title of host publicationParticle-Based Methods III: Fundamentals and Applications - Proceedings of the 3rd International Conference on Particle-based MethodsFundamentals and Applications, Particles 2013
Pages352-363
Number of pages12
Publication statusPublished - 2013
Event3rd International Conference on Particle-Based Methods Fundamentals and Applications, Particles 2013 - Stuttgart, Germany
Duration: 18 Sep 201320 Sep 2013

Conference

Conference3rd International Conference on Particle-Based Methods Fundamentals and Applications, Particles 2013
CountryGermany
CityStuttgart
Period18/09/201320/09/2013

Keywords

  • Flow and segregation behaviour
  • Piv
  • Scaling effects
  • Silo centrifuge

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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