力積型個別要素法による湿式ビーズミルの粉砕性能評価

Translated title of the contribution: The Evaluation for Wet Grinding Performance of Beads Mill Using Impulse-Based DEM

Kazuki Shioiri, Hiroyuki Ohmura, Mitsuteru Asai, Naoto Mitsume

Research output: Contribution to journalArticlepeer-review

Abstract

While the Discrete Element Method (DEM) is expected to evaluate wet grinding performance of bead mills, the conventional DEM requires high computational cost because it has the limitation of the time step size for stable computation. In addition, the simulation of wet grinding process requires additional cost to consider the interaction between beads and fluids by using such as CFD-DEM coupling techniques. This study proposes an analysis system for evaluating wet grinding performance of bead mills with less computational cost. Our proposed system adopts the Impulse-Based DEM (IB-DEM) which can use large time step size, the wall model by using the Sign Distance Function (SDF) which flexibly represents complicated shape walls, and the simple modeling of fluid force which can reduce computational cost. We verify our proposed system by comparing the numerical results with experimental results of bead mills with different shapes of rotors.

Translated title of the contributionThe Evaluation for Wet Grinding Performance of Beads Mill Using Impulse-Based DEM
Original languageJapanese
Pages (from-to)488-497
Number of pages10
JournalJournal of the Society of Powder Technology, Japan
Volume59
Issue number10
DOIs
Publication statusPublished - 2022

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Process Chemistry and Technology
  • Fluid Flow and Transfer Processes
  • Filtration and Separation

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