# compute dpd/atom command

## Syntax

compute ID group-ID dpd/atom

• ID, group-ID are documented in compute command
• dpd/atom = style name of this compute command

## Examples

compute 1 all dpd/atom

## Description

Define a computation that accesses the per-particle internal conductive energy (u_cond), internal mechanical energy (u_mech), internal chemical energy (u_chem) and internal temperatures (dpdTheta) for each particle in a group. See the compute dpd command if you want the total internal conductive energy, the total internal mechanical energy, the total chemical energy and average internal temperature of the entire system or group of dpd particles.

Output info:

This compute calculates a per-particle array with 4 columns (u_cond, u_mech, u_chem, dpdTheta), which can be accessed by indices 1-4 by any command that uses per-particle values from a compute as input. See Section 6.15 for an overview of LAMMPS output options.

The per-particle array values will be in energy (u_cond, u_mech, u_chem) and temperature (dpdTheta) units.

## 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 for more info.

This command also requires use of the atom_style dpd command.