forked from lijiext/lammps
50 lines
1.3 KiB
Plaintext
50 lines
1.3 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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compute erotate/sphere command :h3
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[Syntax:]
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compute ID group-ID erotate/sphere :pre
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ID, group-ID are documented in "compute"_compute.html command
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erotate/sphere = style name of this compute command :ul
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[Examples:]
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compute 1 all erotate/sphere :pre
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[Description:]
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Define a computation that calculates the rotational kinetic energy of
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a group of spherical particles.
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The rotational energy is computed as 1/2 I w^2, where I is the moment
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of inertia for a sphere and w is the particle's angular velocity.
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IMPORTANT NOTE: For "2d models"_dimension.html, particles are treated
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as spheres, not disks, meaning their moment of inertia will be the
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same as in 3d.
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[Output info:]
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The scalar value calculated by this compute is "extensive", meaning it
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it scales with the number of atoms in the simulation.
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[Restrictions:]
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This compute requires that particles be represented as extended
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spheres and not point particles. This means they will have an angular
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velocity and a diameter which is determined either by the
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"shape"_shape.html command or by each particle being assigned an
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individual radius, e.g. for "atom_style granular"_atom_style.html.
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[Related commands:] none
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[Default:] none
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