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fix eos/cv command

Syntax:

fix ID group-ID eos/cv cv 

Examples:

fix 1 all eos/cv 0.01 

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:

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.


Restrictions:

This command is part of the USER-DPD package. It is only enabled if LAMMPS was built with that package. See the Build package doc page for more info.

This command also requires use of the atom_style dpd command.

Related commands:

fix shardlow, pair dpd/fdt

Default: none


(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).