Reg_ lower and upper boundary limits for sphere

Dear all,

I would like to have a sphere filled with water. I am confused how to give xlo xhi limits in the read data file… How the periodic boundary conditions can be incorporated to a spherical geometry??

Thank you,

The LAMMPS simulation box is always a brick. You can use fix wall/region

with a sphere-shaped region if you wish to contain water within it. Don’t

know what periodic boundaries with a sphere mean.