LAMMPS Couette Flow


I was wondering if anyone could help me to turn the benchmark water simulation into 3D Couette flow or at least explain some tips on how to do so. I tried creating a region but I obviously cannot do that since the simulation box (read_data command) has already been defined. When I try to use the commands that add walls I get errors saying I cannot have atoms in my simulation box. Can anyone help guide me on a possible method to achieve Couette flow via the 3D water benchmark model?

Thank you,


There are many input scripts and data files
in the examples dir, for both 2d and 3d problems.
That is a good place to start.