fix_modify AtC boundary_faceset command — LAMMPS documentation

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# fix_modify AtC boundary_faceset command

## Syntax

    fix_modify <AtC fixID> boundary_faceset <is|add> <faceset_name>

- AtC fixID = ID of fix atc instance

- boundary_faceset = name of the AtC sub-command

- is or add = select whether to select or add a faceset

- faceset_name = name of the faceset

## Examples

    fix_modify AtC boundary_faceset is obndy

## Description

This command species the faceset name when using a faceset to compute the MD/FE boundary fluxes. The faceset must already exist.

## Restrictions

This is only valid when fe_md_boundary is set to faceset.

## Related AtC commands

- fix_modify AtC command overview

- fix_modify AtC fe_md_boundary

- fix_modify AtC mesh create_faceset box

- fix_modify AtC mesh create_faceset plane

## Default

None.