Particle Interaction | CD-adapco
Discrete Element Modeling in STAR-CCM+ opens the door for accurate simulation of particulate flows.
From tablet manufacturing processes to dry powder inhaler designs, applications involving particle interactions dominate the Life Sciences Industry and the discrete element modeling (DEM) capability in STAR-CCM+ is particularly well-suited to perform simulations of particulate flows.
  • DEM simulates the motion of a large number of interacting particles and tracks them in a numerically efficient manner, modeling contact forces and energy transfer due to collision and heat transfer between particles. Shown is a DEM simulation for a fluidized bed.
  • Spray gun analysis for tablet coating showing complex phenomena including droplet break-up and coalescence. The multiphase simulation was performed by Manesty.
  • Tablet coating in a rotating drum : STAR-CCM+ was used to improve inter-particle coating uniformity by using optimal spraying equipment settings

The DEM capability is fully coupled with a numerical flow simulation in a single integrated software environment. DEM simulates the motion of a large number of particles and tracks the interactions between them in a numerically efficient manner, modeling contact forces and energy transfer due to collisions and heat transfer between the particles.

DEM is an ideal solution for many biomedical device applications including studying particle deposition in human longs, modeling embolus in pulsatile flow or assessing accuracy of vascular filters for a specific particle shape.

In addition, using DEM leads to solids handling solutions for the pharmaceutical processing industry,  whether one needs to analyze the chaotic movement of particles in fluidized beds, improve tablet quality and coating uniformity or find a cost-effective solution for equipment corrosion. The DEM capability in STAR-CCM+ can predict very dense particle flows in a reasonable time, making it practical for analyzing many real world pharmaceutical manufacturing processes such as filling, compressing, compacting, coating and drying.

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