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### fix addforce command

Syntax:

    fix ID group-ID addforce fx fy fz

- ID, group-ID are documented in fix command
- addforce = style name of this fix command
- fx,fy,fz = force component values (force units)

Examples:

    fix kick flow addforce 1.0 0.0 0.0

Description:

Add fx,fy,fz to the corresponding component of force for each atom in the group. This command can be used to give an additional push to atoms in a simulation, such as for a simulation of Poiseuille flow in a channel.

Restart, fix_modify, output, run start/stop, minimize info:

No information about this fix is written to binary restart files. None of the fix_modify options are relevant to this fix. No global scalar or vector or per-atom quantities are stored by this fix for access by various output commands. No parameter of this fix can be used with the start/stop keywords of the run command.

The forces due to this fix are imposed during an energy minimization, invoked by the minimize command.

Restrictions: none

Related commands:

fix setforce, fix aveforce

Default: none