forked from lijiext/lammps
101 lines
2.8 KiB
Plaintext
101 lines
2.8 KiB
Plaintext
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"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
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:link(lws,http://lammps.sandia.gov)
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:link(ld,Manual.html)
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:link(lc,Section_commands.html#comm)
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:line
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pair_style mie/cut command :h3
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[Syntax:]
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pair_style mie/cut cutoff :pre
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cutoff = global cutoff for mie/cut interactions (distance units) :ul
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[Examples:]
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pair_style mie/cut 10.0
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pair_coeff 1 1 0.72 3.40 23.00 6.66
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pair_coeff 2 2 0.30 3.55 12.65 6.00
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pair_coeff 1 2 0.46 3.32 16.90 6.31 :pre
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[Description:]
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The {mie/cut} style computes the Mie potential, given by
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:c,image(Eqs/pair_mie.jpg)
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Rc is the cutoff and C is a function that depends on the repulsive and
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attractive exponents, given by:
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:c,image(Eqs/pair_mie2.jpg)
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Note that for 12/6 exponents, C is equal to 4 and the formula is the
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same as the standard Lennard-Jones potential.
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The following coefficients must be defined for each pair of atoms
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types via the "pair_coeff"_pair_coeff.html command as in the examples
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above, or in the data file or restart files read by the
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"read_data"_read_data.html or "read_restart"_read_restart.html
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commands, or by mixing as described below:
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epsilon (energy units)
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sigma (distance units)
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gammaR
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gammaA
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cutoff (distance units) :ul
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The last coefficient is optional. If not specified, the global
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cutoff specified in the pair_style command is used.
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:line
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[Mixing, shift, table, tail correction, restart, rRESPA info]:
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For atom type pairs I,J and I != J, the epsilon and sigma coefficients
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and cutoff distance for all of the mie/cut pair styles can be mixed.
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If not explicity defined, both the repulsive and attractive gamma
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exponents for different atoms will be calculated following the same
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mixing rule defined for distances. The default mix value is
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{geometric}. See the "pair_modify" command for details.
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This pair style supports the "pair_modify"_pair_modify.html shift
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option for the energy of the pair interaction.
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This pair style supports the "pair_modify"_pair_modify.html tail
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option for adding a long-range tail correction to the energy and
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pressure of the pair interaction.
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This pair style writes its information to "binary restart
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files"_restart.html, so pair_style and pair_coeff commands do not need
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to be specified in an input script that reads a restart file.
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This pair style supports the use of the {inner}, {middle}, and {outer}
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keywords of the "run_style respa"_run_style.html command, meaning the
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pairwise forces can be partitioned by distance at different levels of
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the rRESPA hierarchy. See the "run_style"_run_style.html command for
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details.
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:line
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[Restrictions:] none
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[Related commands:]
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"pair_coeff"_pair_coeff.html
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[Default:] none
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:line
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:link(Mie)
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[(Mie)] G. Mie, Ann Phys, 316, 657 (1903).
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:link(Avendano)
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[(Avendano)] C. Avendano, T. Lafitte, A. Galindo, C. S. Adjiman,
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G. Jackson, E. Muller, J Phys Chem B, 115, 11154 (2011).
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