Hello Sirs,
Thank you very much for your answers.
I would like to ask you the following about DPM:
1) How can the coefficient of restitution be entered in the DPM option?

2) in the DPM option, what is the difference between plotting unsteady statistics instead of DPM Variables?

3) When I simulate the transient option, the velocity profiles I get are the following, but I have doubts because some points appear in the DPM velocity magnitude. How can I plot it correctly? 

Thank you in advance.