Numerical simulation of double helical ribbon agitators using three-dimensional DEM simulation

Kei Sakakura, Takeo Shiojima, Satoru Yamamoto

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

This paper describes three-dimensional numerical simulation of double helical ribbon agitators using discrete element method (DEM). Double helical ribbon agitators have been used to blend powders, it is very important to know the mixing characteristics for scale-up of agitation system. To validate the computed results experiments were carried out with a 30 L cold model. Circulation time and mixing time of particles in the agitator and the shape of vortex predicted by this simulation agreed well with those obtained by experiments. Further, to evaluate the relation of scale up law based on mixing time, some cases of simulation, which volumes were both 90 L and 150 L, were performed. The results show the effect of scale-up factor on the mixing time strongly depends on Fr number.

Original languageEnglish
Pages (from-to)766-772
Number of pages7
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume71
Issue number703
DOIs
Publication statusPublished - 2005 Mar

Keywords

  • Discrete Element Method
  • Mixing Helical Ribbon Agitator
  • Numerical Simulation
  • Scale Up

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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