forked from lijiext/lammps
87 lines
3.0 KiB
Plaintext
Executable File
87 lines
3.0 KiB
Plaintext
Executable File
"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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fix nve/asphere command :h3
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fix nve/asphere/intel command :h3
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[Syntax:]
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fix ID group-ID nve/asphere :pre
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ID, group-ID are documented in "fix"_fix.html command
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nve/asphere = style name of this fix command :ul
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[Examples:]
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fix 1 all nve/asphere :pre
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[Description:]
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Perform constant NVE integration to update position, velocity,
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orientation, and angular velocity for aspherical particles in the
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group each timestep. V is volume; E is energy. This creates a system
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trajectory consistent with the microcanonical ensemble.
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This fix differs from the "fix nve"_fix_nve.html command, which
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assumes point particles and only updates their position and velocity.
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[Restart, fix_modify, output, run start/stop, minimize info:]
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No information about this fix is written to "binary restart
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files"_restart.html. None of the "fix_modify"_fix_modify.html options
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are relevant to this fix. No global or per-atom quantities are stored
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by this fix for access by various "output
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commands"_Section_howto.html#howto_15. No parameter of this fix can
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be used with the {start/stop} keywords of the "run"_run.html command.
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This fix is not invoked during "energy minimization"_minimize.html.
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:line
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Styles with a {cuda}, {gpu}, {intel}, {kk}, {omp}, or {opt} suffix are
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functionally the same as the corresponding style without the suffix.
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They have been optimized to run faster, depending on your available
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hardware, as discussed in "Section_accelerate"_Section_accelerate.html
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of the manual. The accelerated styles take the same arguments and
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should produce the same results, except for round-off and precision
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issues.
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These accelerated styles are part of the USER-CUDA, GPU, USER-INTEL,
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KOKKOS, USER-OMP and OPT packages, respectively. They are only
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enabled if LAMMPS was built with those packages. See the "Making
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LAMMPS"_Section_start.html#start_3 section for more info.
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You can specify the accelerated styles explicitly in your input script
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by including their suffix, or you can use the "-suffix command-line
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switch"_Section_start.html#start_7 when you invoke LAMMPS, or you can
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use the "suffix"_suffix.html command in your input script.
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See "Section_accelerate"_Section_accelerate.html of the manual for
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more instructions on how to use the accelerated styles effectively.
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:line
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[Restrictions:]
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This fix is part of the ASPHERE package. It is only enabled if LAMMPS
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was built with that package. See the "Making
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LAMMPS"_Section_start.html#start_3 section for more info.
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This fix requires that atoms store torque and angular momementum and a
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quaternion as defined by the "atom_style ellipsoid"_atom_style.html
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command.
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All particles in the group must be finite-size. They cannot be point
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particles, but they can be aspherical or spherical as defined by their
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shape attribute.
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[Related commands:]
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"fix nve"_fix_nve.html, "fix nve/sphere"_fix_nve_sphere.html
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[Default:] none
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