[lammps-users] question about modelling atom cascade

I was trying to calculate atom cascade.
First cascade atom has its velocity in z direction 10 times greater than in x and in y.
The author uses fixed volume in z direction as it seen from here.
region rinterior block 2 48 2 48 2 INF
region rexterior block 2 48 2 48 2 INF side out
I was asking if it necessary to do that.
Thank you for your attention.

The difference between fixed and shrink-wrap and periodic
boundaries are explained on the boundary command doc
page. I would use whatever one makes sense to you
for your model.

Steve

2010/10/25 t t <[email protected]092...>: