Educational Resources for Particle Technology

Simulation, Modelling, and Visualization

Technical Areas: computer modelling of flow, breakage, separation

Latest changes: 05Sep16 - phase diagrams / 07Apr18 - reformat /

Home Page

The Significance of PT
Formation from Gas
Formation from Liquid
Comminution, Attrition
Size Enlargement
Particle Physics
Particle Characterization:
   Non-Optical Methods
   Optical Methods
Storage / Discharge:
   Mechanics: wall stress
   Dynamics: flow
Pneumatic Conveying
Fluidized Bed
Mixing and De-mixing
Separation by Size
P./Gas Separation
P./Liquid Separation
Dispersion in Fluids
Heating, Drying
Simulation, Modeling
Specific Applications

Web Sites of Educational Interest

ANIMATION: this lists results of similations. Videos of real processes are placed on the ERPT pages for those processes.
    Dynamic Simulations of Particle Motion -- video files showing
          tumbling drum mixer
          static mixer
          mixing by collision with a rod
          particle motion in a coating drum
          particle in a screw feeder
          particles in a ball mill
          by Y. Tsuji's Group, Osaka Univ. [some captions only in Japanese]

    Dynamic Simulations of Granular Dynamics -- video files showing gas-fluidized particles during
    -- POWDER/tour.html
          by Y-h. Taguchi (Chuo Univ.)

Visualizing complex thermodynamic relationships in multidimensional space is helpful for the prediction and control of multi-component, multi-phase systems. This facility is of critical importance for particle technology. The basis for and examples of such visualizations are presented on the Gibbs Model Website by Prof. Ken Jolls (Iowa State Univ.) and Dr. Daniel Coy (Nanophase Technologies Corp.)
Two-dimensional displays of multi-phase thermodynamic diagrams are produced by "Phase", a computer program developed by Jolls and Coy and made portable by Prof. Walter G. Chapman's group (Rice Univ.). You may obtain a copy of this program from


CFM = Computational Fluid Mechanics: the system is treated as a set of cells whose internal properties are treated as homogeneous. If the system is symmetric, calculations for a few cells may be used to simulate the whole system.

DEM = Discrete Element Modelling: the position of each particle is tracked separately.

FEM = Finite Element Modelling: parameters representing constitutive properties are used to treat the system as a continuum.

TFM = Two-Fluid Modelling: the particle cloud is treated as a second fluid phase within the suspending fluid

Explanations and Disclaimers
You may Email the ERPT Web Site Manager at