2015-07-30 22:38:28 +08:00
|
|
|
<HTML>
|
|
|
|
|
<CENTER><A HREF = "http://lammps.sandia.gov">LAMMPS WWW Site</A> - <A HREF = "Manual.html">LAMMPS Documentation</A> - <A HREF = "Section_commands.html#comm">LAMMPS Commands</A>
|
|
|
|
|
</CENTER>
|
2011-08-28 04:09:27 +08:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2015-07-30 22:38:28 +08:00
|
|
|
<HR>
|
2011-08-28 04:09:27 +08:00
|
|
|
|
2015-07-30 22:38:28 +08:00
|
|
|
<H3>fix meso command
|
|
|
|
|
</H3>
|
|
|
|
|
<P><B>Syntax:</B>
|
|
|
|
|
</P>
|
|
|
|
|
<PRE>fix ID group-ID meso
|
|
|
|
|
</PRE>
|
|
|
|
|
<UL><LI>ID, group-ID are documented in <A HREF = "fix.html">fix</A> command
|
|
|
|
|
<LI>meso = style name of this fix command
|
|
|
|
|
</UL>
|
|
|
|
|
<P><B>Examples:</B>
|
|
|
|
|
</P>
|
|
|
|
|
<PRE>fix 1 all meso
|
|
|
|
|
</PRE>
|
|
|
|
|
<P><B>Description:</B>
|
|
|
|
|
</P>
|
|
|
|
|
<P>Perform time integration to update position, velocity, internal energy
|
2011-08-28 05:11:46 +08:00
|
|
|
and local density for atoms in the group each timestep. This fix is
|
|
|
|
|
needed to time-integrate mesoscopic systems where particles carry
|
2015-07-30 22:38:28 +08:00
|
|
|
internal variables such as SPH or DPDE.
|
|
|
|
|
</P>
|
|
|
|
|
<P>See <A HREF = "USER/sph/SPH_LAMMPS_userguide.pdf">this PDF guide</A> to using SPH in
|
|
|
|
|
LAMMPS.
|
|
|
|
|
</P>
|
|
|
|
|
<P><B>Restart, fix_modify, output, run start/stop, minimize info:</B>
|
|
|
|
|
</P>
|
|
|
|
|
<P>No information about this fix is written to <A HREF = "restart.html">binary restart
|
|
|
|
|
files</A>. None of the <A HREF = "fix_modify.html">fix_modify</A> options
|
2011-08-28 04:09:27 +08:00
|
|
|
are relevant to this fix. No global or per-atom quantities are stored
|
2015-07-30 22:38:28 +08:00
|
|
|
by this fix for access by various <A HREF = "Section_howto.html#howto_15">output
|
|
|
|
|
commands</A>. No parameter of this fix can
|
|
|
|
|
be used with the <I>start/stop</I> keywords of the <A HREF = "run.html">run</A> command.
|
|
|
|
|
This fix is not invoked during <A HREF = "minimize.html">energy minimization</A>.
|
|
|
|
|
</P>
|
|
|
|
|
<P><B>Restrictions:</B>
|
|
|
|
|
</P>
|
|
|
|
|
<P>This fix is part of the USER-SPH package. It is only enabled if
|
|
|
|
|
LAMMPS was built with that package. See the <A HREF = "Section_start.html#start_3">Making
|
|
|
|
|
LAMMPS</A> section for more info.
|
|
|
|
|
</P>
|
|
|
|
|
<P><B>Related commands:</B>
|
|
|
|
|
</P>
|
|
|
|
|
<P>"fix meso/stationary"
|
|
|
|
|
</P>
|
|
|
|
|
<P><B>Default:</B> none
|
|
|
|
|
</P>
|
|
|
|
|
</HTML>
|
