Syntax:
fix ID group-ID viscous coeff
Examples:
fix 1 flow viscous 0.1
Description:
Add a viscous damping force to atoms in the group that is proportional to the velocity of the atom. This is useful for draining the kinetic energy from the system in a controlled fasion. The damping force F is given by F = - coeff * velocity. The larger the coefficient, the faster the kinetic energy is reduced.
Restrictions: none
Related commands: none
Default: none