Particle Inlets

Particle Inlets

Particle inlets have been added to simplify model generation by automatically feeding streams of balls, clumps, and/or rigid blocks into the model during cycling. This is particularly useful for material handling and processing applications, along with conveyor walls.

  • Based on the brick logic to pre-define a collection of objects
  • Inlet flow rates, positions, and orientations can be specified
  • Inlets can be translated and/or rotated at defined velocities during cycling

Once one or multiple bricks is created/imported with some desired particle distribution, then the information in the brick(s) can be used to create inlet(s) of particles using the inlet create command. Existing inlets may be modified with the inlet modify command.

During cycling, particles in the brick are fictitiously translated according to the specified flow-velocity vector and the current timestep. Given these updated fictitious positions, particles in the brick whose fall out of the brick extent boundary are identified for insertion and their centroid is mapped back into the brick extent. Copies of particles corresponding to the fictitious brick particles identified for insertion are finally actually inserted, with an initial velocity set to the inlet flow velocity. Note that the sole information used for the inlets regards the particles, contacts information is not considered. Contacts are subsequently automatically created during cycling.

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