Keeping a particular region empty during run

Dear lammps users,

At the start, I have an empty region ( 30 40 30 40 40 45) in my simulation box and I want this to remain empty for some time say during nvt/npt relaxation. Is there any command in lammps to achieve this?

Thanks
Rajesh

You’d need to apply some repulsive force to keep

atoms out of the region. Fix wall/region can do

something like that.

Steve

You'd need to apply some repulsive force to keep
atoms out of the region. Fix wall/region can do
something like that.

​or simply put some atoms there, that are not time integrated, i.e. won't
move, and then delete them, when you ​want the vacancy.

axel.

Thank you Steve for your quick response.

Thank you Axel.