compute sph/e/atom command — LAMMPS documentation

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# compute sph/e/atom command

## Syntax

    compute ID group-ID sph/e/atom

- ID, group-ID are documented in compute command

- sph/e/atom = style name of this compute command

## Examples

    compute 1 all sph/e/atom

## Description

Define a computation that calculates the per-atom internal energy for each atom in a group.

The internal energy is the energy associated with the internal degrees of freedom of an SPH particle, i.e. a Smooth-Particle Hydrodynamics particle.

See this PDF guide to using SPH in LAMMPS.

The value of the internal energy will be 0.0 for atoms not in the specified compute group.

## Output info

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 the Howto output page for an overview of LAMMPS output options.

The per-atom vector values will be in energy units.

## Restrictions

This compute is part of the SPH package. It is only enabled if LAMMPS was built with that package. See the Build package page for more info.

## Related commands

dump custom

## Default

none