Analysis of Fluid Energy Mill by gas-solid two-phase flow simulation

Shuli Teng, Peng Wang, Qi Zhang, Costas Gogos

Research output: Contribution to journalArticlepeer-review

38 Scopus citations


The particulate motions and collisions inside the Fluid Energy Mill were simulated by coupling the Discrete Element Method (DEM) and Computational Fluid Dynamics (CFD). The influences of the operating conditions on the particulate motions and collisions were investigated to further explain size reduction process. The high-speed grinding air streams introduced through narrow inlets selectively accelerate the particles located near the inlets. Those particles are more likely to hit the wall at a high speed, or collide with other particles due to the velocity difference. The simulation results also reveal that abrasion is the dominant breakage mechanism during the particle-particle collisions. On the other hand, with the increase of number of particles in the chamber, the particle-particle collision becomes more important for milling, compared to the particle-wall collision. The side-swipe particle-particle collisions also facilitate transferring of coating materials among particles, which explains the simultaneous milling and coating process recently developed in our lab.

Original languageEnglish (US)
Pages (from-to)684-693
Number of pages10
JournalPowder Technology
Issue number3
StatePublished - Apr 10 2011

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering


  • Fluid Energy Mill
  • Milling
  • Particle collisions
  • Particle motion
  • Simulation


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