Hello, researcher. I am currently working on simulating a simple particle discharge process. I want the particles to be discharged from a small hole at the bottom at a constant rate, but I have encountered some issues.This is my bug report.
3_2025-08-18T213438.747615.zip (49.0 MB)
Did you try any of the 3 suggested solutions:
Particle may have gone OUT-OF-BOUNDS.
To resolve this issue, please consider:
a) Verify all wall boundary conditions are defined
b) Reducing the value of the variable NEIGHBOR_SEARCH_N (Solids>DEM>Max steps between neighbor search)
c) Increasing the particle and/or wall stiffness (Solids>DEM>Normal spring constant or Young's modulus)
The particles are too soft and are going through the wall. Increase the spring stiffness, by a factor of 10 or 100 or more until they don’t go through the wall.
When I create a No-Slip Wall, there is an error as shown in the figure.
The bug report is as follws.
4_2025-08-19T221415.279969.zip (71.1 KB)
Thank you, but I did not find the bcs.py file.
Are you on Windows or Linux?
If you open a conda/miniforge prompt, activate the MFIX environment, then on Linux cd $CONDA_PREFIX on Windows cd %CONDA_PREFIX it will be in a subdirectory of lib called site-packages/mfixgui. On Linux it’s lib/python-X.Y, on Windows its just lib