<spanid="index-0"></span><h1>compute meso_e/atom command<aclass="headerlink"href="#compute-meso-e-atom-command"title="Permalink to this headline">¶</a></h1>
<divclass="section"id="syntax">
<h2>Syntax<aclass="headerlink"href="#syntax"title="Permalink to this headline">¶</a></h2>
<divclass="highlight-python"><divclass="highlight"><pre>compute ID group-ID meso_e/atom
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<ulclass="simple">
<li>ID, group-ID are documented in <aclass="reference internal"href="compute.html"><em>compute</em></a> command</li>
<li>meso_e/atom = style name of this compute command</li>
</ul>
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<divclass="section"id="examples">
<h2>Examples<aclass="headerlink"href="#examples"title="Permalink to this headline">¶</a></h2>
<divclass="highlight-python"><divclass="highlight"><pre>compute 1 all meso_e/atom
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<divclass="section"id="description">
<h2>Description<aclass="headerlink"href="#description"title="Permalink to this headline">¶</a></h2>
<p>Define a computation that calculates the per-atom internal energy
for each atom in a group.</p>
<p>The internal energy is the energy associated with the internal degrees
of freedom of a mesoscopic particles, e.g. a Smooth-Particle
Hydrodynamics particle.</p>
<p>See <aclass="reference external"href="USER/sph/SPH_LAMMPS_userguide.pdf">this PDF guide</a> to using SPH in
LAMMPS.</p>
<p>The value of the internal energy will be 0.0 for atoms not in the
specified compute group.</p>
<p><strong>Output info:</strong></p>
<p>This compute calculates a per-atom vector, which can be accessed by
any command that uses per-atom values from a compute as input. See
<aclass="reference internal"href="Section_howto.html#howto-15"><span>Section_howto 15</span></a> for an overview of
LAMMPS output options.</p>
<p>The per-atom vector values will be in energy <aclass="reference internal"href="units.html"><em>units</em></a>.</p>
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<divclass="section"id="restrictions">
<h2>Restrictions<aclass="headerlink"href="#restrictions"title="Permalink to this headline">¶</a></h2>
<p>This compute is part of the USER-SPH package. It is only enabled if
LAMMPS was built with that package. See the <aclass="reference internal"href="Section_start.html#start-3"><span>Making LAMMPS</span></a> section for more info.</p>
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<divclass="section"id="related-commands">
<h2>Related commands<aclass="headerlink"href="#related-commands"title="Permalink to this headline">¶</a></h2>
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