I am trying to simulate the collision between a nanoparticle moving
through vacuum onto a surface. I have created the nanoparticle using
"lattice" and "region particle sphere ..." commands and can make it
move towards the surface with "velocity particle ..." however I also
need to give the particle some internal thermal energy. I can do this
with "velocity create ..." but then I lose the centre of mass motion.
Is it possible to create the particle with thermal and COM motions?
Any pointers would be greatly appreciated.