Hi all
I want to model shear flow between two walls using Lammps
.
I am not getting how to give fixed velocity as well as harmonic motion (with spring constant as input) to the group of atoms that I am using as wall.
Wall atoms are just vibrating about their mean position (which is varying because of fixed velocity). There is no spring force between wall-fluid particles, only LJ potential on fluid because of the wall particles. No other potential between wall-wall particles, the only force is because of the spring.
Thanks in advance