forked from lijiext/lammps
49 lines
1.2 KiB
Plaintext
49 lines
1.2 KiB
Plaintext
"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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dimension command :h3
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[Syntax:]
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dimension N :pre
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N = 2 or 3 :ul
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[Examples:]
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dimension 2 :pre
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[Description:]
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Set the dimensionality of the simulation. By default LAMMPS runs 3d
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simulations. To run a 2d simulation, this command should be used
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prior to setting up a simulation box via the
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"create_box"_create_box.html or "read_data"_read_data.html commands.
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Restart files also store this setting.
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See the discussion in "Section_howto"_Section_howto.html for
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additional instructions on how to run 2d simulations.
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IMPORTANT NOTE: Some models in LAMMPS treat particles as finite-size
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spheres or ellipsoids, as opposed to point particles. In 2d, the
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particles will still be spheres or ellipsoids, not circular disks or
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ellipses, meaning their moment of inertia will be the same as in 3d.
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[Restrictions:]
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This command must be used before the simulation box is defined by a
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"read_data"_read_data.html or "create_box"_create_box.html command.
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[Related commands:]
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"fix enforce2d"_fix_enforce2d.html
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[Default:]
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dimension 3 :pre
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