Nikhil Narale
Ansys Employee



This should not happen because for axis boundaries, the solver assumes 'reflect type' boundary condition by default. You may want to check this section of the user's guide: 20.4. Setting Boundary Conditions for the Discrete Phase (

If you are not able to access the link, please refer to this forum discussion: Using Help with links (

Check if correct DPM boundary conditions have been assigned to the wall boundaries. 


Thank you