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<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>
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<H3>compute smd/ulsph_num_neighs command
</H3>
<P><B>Syntax:</B>
</P>
<PRE>compute ID group-ID smd/ulsph_num_neighs
</PRE>
<UL><LI>ID, group-ID are documented in <A HREF = "compute.html">compute</A> command
<LI>smd/ulsph_num_neighs = style name of this compute command
</UL>
<P><B>Examples:</B>
</P>
<PRE>compute 1 all smd/ulsph_num_neighs
</PRE>
<P><B>Description:</B>
</P>
<P>Define a computation that returns the number of neighbor particles
inside of the smoothing kernel radius for particles interacting via the updated Lagrangian SPH pair style.
</P>
<P>See <A HREF = "USER/smd/SMD_LAMMPS_userguide.pdf">this PDF guide</A> to using Smooth Mach Dynamics in LAMMPS.
</P>
<P><B>Output info:</B>
</P>
<P>This compute returns a per-particle vector, which can be accessed by
any command that uses per-particle values from a compute as input. See
<A HREF = "Section_howto.html#howto_15">Section_howto 15</A> for an overview of
LAMMPS output options.
</P>
<P>The per-particle values will be given dimentionless, see <A HREF = "units.html">units</A>.
</P>
<P><B>Restrictions:</B>
</P>
<P>This compute is part of the USER-SMD package. It is only enabled if
LAMMPS was built with that package. See the <A HREF = "Section_start.html#start_2">Making LAMMPS</A>
section for more info. This compute can only be used for particles which interact with the updated Lagrangian SPH pair style.
</P>
<P><B>Related commands:</B>
</P>
<P>smd/tlsph_num_neighs
</P>
<P><B>Default:</B> none
</P>
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