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<title>ATC: fix_modify AtC control momentum</title>
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<h1><a class="anchor" id="man_control_momentum">fix_modify AtC control momentum </a></h1><h2><a class="anchor" id="syntax">
syntax</a></h2>
<p>fix_modify AtC control momentum none <br/>
</p>
<p>fix_modify AtC control momentum rescale &lt;frequency&gt;<br/>
</p>
<ul>
<li>frequency (int) = time step frequency for applying displacement and velocity rescaling <br/>
</li>
</ul>
<p>fix_modify AtC control momentum glc_displacement <br/>
</p>
<p>fix_modify AtC control momentum glc_velocity <br/>
</p>
<p>fix_modify AtC control momentum hoover <br/>
</p>
<p>fix_modify AtC control momentum flux [faceset face_set_id, interpolate]</p>
<ul>
<li>face_set_id (string) = id of boundary face set, if not specified (or not possible when the atomic domain does not line up with mesh boundaries) defaults to an atomic-quadrature approximate evaulation<br/>
</li>
</ul>
<h2><a class="anchor" id="examples">
examples</a></h2>
<p>fix_modify AtC control momentum glc_velocity <br/>
fix_modify AtC control momentum flux faceset bndy_faces <br/>
</p>
<h2><a class="anchor" id="description">
description</a></h2>
<h2><a class="anchor" id="restrictions">
restrictions</a></h2>
<p>only to be used with specific transfers : elastic <br/>
rescale not valid with time filtering activated </p>
<h2><a class="anchor" id="related">
related</a></h2>
<h2><a class="anchor" id="default">
default</a></h2>
<p>none </p>
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