I have successfully managed to run a MEAM equilibration run at 1900K on a particle consisting of about 2000 Ni atoms, and save out a restart file at the end of the simulation.
I now want to combine this set of equilibrated atoms with their associated velocities, together with another set of atoms (a slab of nickel, separately equilibrated at 300K).
Setting aside for a minute the problem of loading two independently produced restart files into the same simulation (which would presumably be best run as NVE), I want to give the particle an initial centre-of-mass velocity towards the slab.
How can I do this? The 'velocity' options seem to allow setting a constant velocity, or random velocities characteristic of a specific temperature (overwriting the equilibrated data), but not both, and there does not appear to be an obvious 'add' option.
Advice is also welcome on the 'two-into-one' problem mentioned above.
Many thanks in advance,