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fix eos/cv command
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<div
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<span
id=
"index-0"
></span><h1>
fix eos/cv command
<a
class=
"headerlink"
href=
"#fix-eos-cv-command"
title=
"Permalink to this headline"
>
¶
</a></h1>
<div
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<h2>
Syntax
<a
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¶
</a></h2>
<div
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><div
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"highlight"
><pre>
fix ID group-ID eos/cv cv
</pre></div>
</div>
<ul
class=
"simple"
>
<li>
ID, group-ID are documented in
<a
class=
"reference internal"
href=
"fix.html"
><em>
fix
</em></a>
command
</li>
<li>
eos/cv = style name of this fix command
</li>
<li>
cv = constant-volume heat capacity (energy/temperature units)
</li>
</ul>
</div>
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Examples
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¶
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<div
class=
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><div
class=
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><pre>
fix 1 all eos/cv 0.01
</pre></div>
</div>
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Description
<a
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¶
</a></h2>
<p>
Fix
<em>
eos/cv
</em>
applies a mesoparticle equation of state to relate the
particle internal energy (u_i) to the particle internal temperature
(dpdTheta_i). The
<em>
eos/cv
</em>
mesoparticle equation of state requires
the constant-volume heat capacity, and is defined as follows:
</p>
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<p>
where Cv is the constant-volume heat capacity, u_cond is the internal
conductive energy, and u_mech is the internal mechanical energy. Note
that alternative definitions of the mesoparticle equation of state are
possible.
</p>
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Restrictions
<a
class=
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href=
"#restrictions"
title=
"Permalink to this headline"
>
¶
</a></h2>
<p>
The fix
<em>
eos/cv
</em>
is only available if LAMMPS is built with the
USER-DPD package.
</p>
</div>
<div
class=
"section"
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"related-commands"
>
<h2>
Related commands
<a
class=
"headerlink"
href=
"#related-commands"
title=
"Permalink to this headline"
>
¶
</a></h2>
<p><a
class=
"reference internal"
href=
"fix_shardlow.html"
><em>
fix shardlow
</em></a>
,
<a
class=
"reference internal"
href=
"pair_dpd_fdt.html"
><em>
pair dpd/fdt
</em></a></p>
<p><strong>
Default:
</strong>
none
</p>
<hr
class=
"docutils"
/>
<p
id=
"larentzos"
><strong>
(Larentzos)
</strong>
J.P. Larentzos, J.K. Brennan, J.D. Moore, and
W.D. Mattson,
“
LAMMPS Implementation of Constant Energy Dissipative
Particle Dynamics (DPD-E)
”
, ARL-TR-6863, U.S. Army Research
Laboratory, Aberdeen Proving Ground, MD (2014).
</p>
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