Particles out of the cylinder

[NourCH]

Hello,
I ran the zip file attached : a granudrum drum half filled but I faced two problems:

• The particles went outside the cylinder even though the boundary condition of the walls is no-slip wall.
• The simulation stopped unexpectedly.
  
  

calibration_2_2024-01-18T141538.204326.zip (89.5 MB)

Thank you in advance for your help.

[cgw]

I haven’t run the simulation yet, but I can say: the access violation is almost certainly due to particles leaving the cylinder. And particles leaving the valid domain is a frequent problem, most often due to either spring constants set too low, or leaky mesh. Try searching the forum for “spring” for similar cases.