I use “fix rigid” command on a group of atoms and want to let it moving along a specific direction with a constant velocity.
However, the manual says:
“The fix rigid updates the positions and velocities of the rigid atoms with a constant-energy time integration, so you should not update the same atoms via other fixes (e.g. nve, nvt, npt).”
Then how can I let a rigid group moving with a specific velocity?
Thanks in advance!