I’ve been working with simulations relating to Silos for granular flows, and I’d like to use the Fix pour, Fix move, or Displace_ atom commands along with dynamic group command.
But I am unable to use them under dynamic conditions, as specified in Lammps manual.
So I would like to know is there any way I can accommodate the dynamic group setting with any of the above-mentioned fixes?
The goal is to have particles exiting the simulation domain/or entering a specific region of the domain reinserted from the top without the need for periodic boundary conditions, and also to have them enter from the top with a random seed rather than in a congested or cluttered manner as occurs when a periodic boundary is used.
Incase you need further clarification please let me know.