CONSERVE

The keywords requests imposition of constraints on some or all mechanical constants of the overall motion of the system.

NONE

Do not impose constraints. This is the default, except for MDYNAMICS RANDOM.

ALL

Equivalent to COM, ANG and MOM. This is the default for MDYNAMICS RANDOM

COM

Reset position of the centre of mass of the system to (0,0,0) on each MD step.

ANG

Reset overall angular momentum of the system to zero on each MD step. This constraint makes no sense, and is ignored, for periodic calculations

MOM

Reset overall momentum of motion of the system to zero on each MD step.