"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c

:link(lws,http://lammps.sandia.gov)
:link(ld,Manual.html)
:link(lc,Section_commands.html#comm)

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fix eos/cv command :h3

[Syntax:]

fix ID group-ID eos/cv cv :pre

ID, group-ID are documented in "fix"_fix.html command
eos/cv = style name of this fix command
cv = constant-volume heat capacity (energy/temperature units) :ul

[Examples:]

fix 1 all eos/cv 0.01 :pre

[Description:]

Fix {eos/cv} applies a mesoparticle equation of state to relate the
particle internal energy (u_i) to the particle internal temperature
(dpdTheta_i).  The {eos/cv} mesoparticle equation of state requires
the constant-volume heat capacity, and is defined as follows:

:c,image(Eqs/fix_eos-cv.jpg)

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.

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[Restrictions:]

This command is part of the USER-DPD package.  It is only enabled if
LAMMPS was built with that package.  See the "Making
LAMMPS"_Section_start.html#start_3 section for more info.

This command also requires use of the "atom_style dpd"_atom_style.html
command.

[Related commands:]

"fix shardlow"_fix_shardlow.html, "pair dpd/fdt"_pair_dpd_fdt.html

[Default:] none

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:link(Larentzos)
[(Larentzos)] 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).
