forked from lijiext/lammps
58 lines
1.6 KiB
Plaintext
58 lines
1.6 KiB
Plaintext
|
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
|
||
|
|
|
||
|
|
:link(lws,http://lammps.sandia.gov)
|
||
|
|
:link(ld,Manual.html)
|
||
|
|
:link(lc,Section_commands.html#comm)
|
||
|
|
|
||
|
|
:line
|
||
|
|
|
||
|
|
pair_style zero command :h3
|
||
|
|
|
||
|
|
[Syntax:]
|
||
|
|
|
||
|
|
pair_style zero cutoff :pre
|
||
|
|
|
||
|
|
zero = style name of this pair style
|
||
|
|
cutoff = global cutoff (distance units) :l
|
||
|
|
|
||
|
|
[Examples:]
|
||
|
|
|
||
|
|
pair_style zero
|
||
|
|
pair_coeff * *
|
||
|
|
pair_coeff 1 2 3.0 :pre
|
||
|
|
|
||
|
|
[Description:]
|
||
|
|
|
||
|
|
Define a global cutoff length for the purpose of building a neighbor
|
||
|
|
list and acquiring ghost atoms, but do not compute any pairwise
|
||
|
|
forces.
|
||
|
|
|
||
|
|
This can be useful for fixes or computes which require a neighbor list
|
||
|
|
to enumerate pairs of atoms within some cutoff distance, but when
|
||
|
|
pairwise forces are not otherwise needed. Examples are the "fix
|
||
|
|
bond/create"_fix_bond_create.html, "compute rdf"_compute_rdf.html,
|
||
|
|
"compute voronoi/atom"_compute_voronoi_atom.html commands.
|
||
|
|
|
||
|
|
Note that the "comm_modify cutoff"_comm_modify.html command can be
|
||
|
|
used to insure communication of ghost atoms even when a pair style is
|
||
|
|
not defined, but it will not trigger neighbor list generation.
|
||
|
|
|
||
|
|
The following coefficients must be defined for each pair of atoms
|
||
|
|
types via the "pair_coeff"_pair_coeff.html command as in the examples
|
||
|
|
above, or in the data file or restart files read by the
|
||
|
|
"read_data"_read_data.html or "read_restart"_read_restart.html
|
||
|
|
commands, or by mixing as described below:
|
||
|
|
|
||
|
|
cutoff (distance units) :ul
|
||
|
|
|
||
|
|
This coefficient is optional. If not specified, the global cutoff
|
||
|
|
specified in the pair_style command is used.
|
||
|
|
|
||
|
|
[Restrictions:] none
|
||
|
|
|
||
|
|
[Related commands:]
|
||
|
|
|
||
|
|
"pair_style none"_pair_none.html
|
||
|
|
|
||
|
|
[Default:] none
|