Hopper charging with spherical particles including rolling resistance mechanism

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Software Used 
Project Description 
  • Evaluate the feasibility of using the distinct‐ element modeling to study the flow and segregation of frictional particles without cohesion.
  • Simulate an experimental test corresponding to the charge/discharge of a scale model batch hopper.
  • Analyze the segregation observed in the hopper after its charge.
Itasca's Role 
  • Charge of a hopper with a geometry and parameters specified by ArcelorMittal.
  • Import from a CAD design the real geometry of the hopper.
  • Develop a new rolling resistance contact law to apply on spherical particles instead of using the real grain
Project Results 
  • Rolling resistance model allows the repose angle of the real material to be simulated.
  • Observation of segregation mechanisms during the charge of the hopper:
    • smaller particles tend to concentrate in the inner cylinder, while bigger particles concentrate nearby the hopper walls.
    • the bottom part of the hopper is filled by a homogeneous material.
  • Simulations give insight on segregation mechanisms that explain the results observed later on (during the discharge).
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