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fix_gran_diag.html
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Thu, Jan 23, 04:57
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rLAMMPS lammps
fix_gran_diag.html
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<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>
<HR>
<H3>
fix gran/diag command
</H3>
<P><B>
Syntax:
</B>
</P>
<PRE>
fix ID group-ID gran/diag nevery file zlayer
</PRE>
<UL><LI>
ID, group-ID are documented in
<A
HREF =
"fix.html"
>
fix
</A>
command
<LI>
gran/diag = style name of this fix command
<LI>
nevery = compute diagnostics every this many timesteps
<LI>
file = filename to store diagnostic info in
<LI>
zlayer = bin size in z dimension
</UL>
<P><B>
Examples:
</B>
</P>
<PRE>
fix 1 all gran/diag 1000 tmp 0.9
</PRE>
<P><B>
Description:
</B>
</P>
<P>
Compute aggregate density, velocity, and stress diagnostics for a
group of granular atoms as a function of z depth in the granular
system. The results are written to 3 files named file.den, file.vel,
and file.str. The z bins begin at the bottom of the system and extend
upward with a thickness of
<I>
zlayer
</I>
for each bin. The quantities
written to the file are averaged over all atoms in the bin.
</P>
<P><B>
Restart, fix_modify, thermo 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
are relevant to this fix. No quantities calculated by this fix can be
output by the
<A
HREF =
"thermo_style.html"
>
thermo_style custom
</A>
command. 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 "granular" package. It is only enabled if
LAMMPS was built with that package. See the
<A
HREF =
"Section_start.html#2_3"
>
Making
LAMMPS
</A>
section for more info.
</P>
<P><B>
Related commands:
</B>
</P>
<P><A
HREF =
"atom_style.html"
>
atom_style granular
</A>
</P>
<P><B>
Default:
</B>
none
</P>
</HTML>
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