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fix freeze command

Syntax:

fix ID group-ID freeze 

Examples:

fix 2 bottom freeze 

Description:

Zero out the force and torque on a granular particle. This is useful for preventing certain particles from moving in a simulation.

Restrictions:

Can only be used with atom_style granular.

There can only be a single freeze fix defined. This is because other parts of the code (pair potentials, thermodynamics, etc) treat frozen particles differently and need to be able to reference a single group to which this fix is applied.

Related commands: none

atom_style granular

Default: none