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lammps/doc/html/_sources/fix_lb_pc.txt
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fix_lb_pc.txt
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.. index:: fix lb/pc
fix lb/pc command
=================
Syntax
""""""
.. parsed-literal::
fix ID group-ID lb/pc
* ID, group-ID are documented in the :doc:`fix <fix>` command
* lb/pc = style name of this fix command
Examples
""""""""
.. parsed-literal::
fix 1 all lb/pc
Description
"""""""""""
Update the positions and velocities of the individual particles
described by *group-ID*\ , experiencing velocity-dependent hydrodynamic
forces, using the integration algorithm described in :ref:`Mackay et al. <Mackay>`. This integration algorithm should only be used if a
user-specified value for the force-coupling constant used in :doc:`fix lb/fluid <fix_lb_fluid>` has been set; do not use this integration
algorithm if the force coupling constant has been set by default.
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 <4_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-LB package. It is only enabled if LAMMPS
was built with that package. See the :ref:`Making LAMMPS <start_3>` section for more info.
Can only be used if a lattice-Boltzmann fluid has been created via the
:doc:`fix lb/fluid <fix_lb_fluid>` command, and must come after this
command.
Related commands
""""""""""""""""
:doc:`fix lb/fluid <fix_lb_fluid>` :doc:`fix lb/rigid/pc/sphere <fix_lb_rigid_pc_sphere>`
**Default:** None.
----------
.. _Mackay:
**(Mackay et al.)** Mackay, F. E., Ollila, S.T.T., and Denniston, C., Hydrodynamic Forces Implemented into LAMMPS through a lattice-Boltzmann fluid, Computer Physics Communications 184 (2013) 2021-2031.
.. _lws: http://lammps.sandia.gov
.. _ld: Manual.html
.. _lc: Section_commands.html#comm
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