[lammps-users] fix wall/piston

[lammps-users]

Dear lammps users,

The version of my lammps is 29Sep2021.
I tried to use fix wall/piston to apply a 3-bar pressure to a certain region in the model.
But it can only move along the positive z direction. Is there a method to set it move in the negative z-direction?

Regards
Ting

[akohlmey]

You would have to change the source code. Just flip your system.