forked from lijiext/lammps
61 lines
1.5 KiB
Plaintext
61 lines
1.5 KiB
Plaintext
.. index:: fix meso
|
|
|
|
fix meso command
|
|
================
|
|
|
|
Syntax
|
|
""""""
|
|
|
|
.. parsed-literal::
|
|
|
|
fix ID group-ID meso
|
|
|
|
* ID, group-ID are documented in :doc:`fix <fix>` command
|
|
* meso = style name of this fix command
|
|
|
|
Examples
|
|
""""""""
|
|
|
|
.. parsed-literal::
|
|
|
|
fix 1 all meso
|
|
|
|
Description
|
|
"""""""""""
|
|
|
|
Perform time integration to update position, velocity, internal energy
|
|
and local density for atoms in the group each timestep. This fix is
|
|
needed to time-integrate mesoscopic systems where particles carry
|
|
internal variables such as SPH or DPDE.
|
|
|
|
See `this PDF guide <USER/sph/SPH_LAMMPS_userguide.pdf>`_ to using SPH in
|
|
LAMMPS.
|
|
|
|
Restart, fix_modify, output, run start/stop, minimize info
|
|
""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
|
|
|
|
No information about this fix is written to :doc:`binary restart files <restart>`. None of the :doc:`fix_modify <fix_modify>` options
|
|
are relevant to this fix. No global or per-atom quantities are stored
|
|
by this fix for access by various :ref:`output commands <howto_15>`. No parameter of this fix can
|
|
be used with the *start/stop* keywords of the :doc:`run <run>` command.
|
|
This fix is not invoked during :doc:`energy minimization <minimize>`.
|
|
|
|
Restrictions
|
|
""""""""""""
|
|
|
|
|
|
This fix is part of the USER-SPH package. It is only enabled if
|
|
LAMMPS was built with that package. See the :ref:`Making LAMMPS <start_3>` section for more info.
|
|
|
|
Related commands
|
|
""""""""""""""""
|
|
|
|
"fix meso/stationary"
|
|
|
|
**Default:** none
|
|
|
|
|
|
.. _lws: http://lammps.sandia.gov
|
|
.. _ld: Manual.html
|
|
.. _lc: Section_commands.html#comm
|