Hello,
I am trying to use the fix nph command and the atom_style granular. I get the error that the fix nph needs per-type mass definition, which is not the case for granular atoms. Then I tried to use the atom_style hybrid granular atomic. It seems to be working (there is no error message), but I am not quite sure how it treats the mass definition (using mass command) for the granular part (for instance, does it take this mass in the granular force definition?). Is it possible to use fix nph for the granular atom style and is there any other way to do it?
Thank you,
Francois Fillion-Gourdeau