forked from lijiext/lammps
73 lines
2.1 KiB
Plaintext
73 lines
2.1 KiB
Plaintext
.. index:: fix lb/pc
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fix lb/pc command
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=================
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Syntax
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""""""
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.. parsed-literal::
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fix ID group-ID lb/pc
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* ID, group-ID are documented in the :doc:`fix <fix>` command
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* lb/pc = style name of this fix command
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Examples
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""""""""
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.. parsed-literal::
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fix 1 all lb/pc
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Description
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"""""""""""
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Update the positions and velocities of the individual particles
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described by *group-ID*\ , experiencing velocity-dependent hydrodynamic
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forces, using the integration algorithm described in :ref:`Mackay et al. <Mackay>`. This integration algorithm should only be used if a
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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
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algorithm if the force coupling constant has been set by default.
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Restart, fix_modify, output, run start/stop, minimize info
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""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
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No information about this fix is written to :doc:`binary restart files <restart>`. None of the :doc:`fix_modify <fix_modify>` options
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are relevant to this fix. No global or per-atom quantities are stored
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by this fix for access by various :ref:`output commands <4_15>`. No parameter of this fix can be
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used with the *start/stop* keywords of the :doc:`run <run>` command.
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This fix is not invoked during :doc:`energy minimization <minimize>`.
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Restrictions
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""""""""""""
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This fix is part of the USER-LB package. It is only enabled if LAMMPS
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was built with that package. See the :ref:`Making LAMMPS <start_3>` section for more info.
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Can only be used if a lattice-Boltzmann fluid has been created via the
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:doc:`fix lb/fluid <fix_lb_fluid>` command, and must come after this
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command.
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Related commands
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""""""""""""""""
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:doc:`fix lb/fluid <fix_lb_fluid>` :doc:`fix lb/rigid/pc/sphere <fix_lb_rigid_pc_sphere>`
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**Default:** None.
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----------
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.. _Mackay:
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**(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.
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.. _lws: http://lammps.sandia.gov
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.. _ld: Manual.html
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.. _lc: Section_commands.html#comm
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