git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@14950 f3b2605a-c512-4ea7-a41b-209d697bcdaa

doc/html/_sources/compute_erotate_sphere_atom.txt

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+.. index:: compute erotate/sphere/atom
+
+compute erotate/sphere/atom command
+===================================
+
+Syntax
+""""""
+
+.. parsed-literal::
+
+   compute ID group-ID erotate/sphere/atom
+
+* ID, group-ID are documented in :doc:`compute <compute>` command
+* erotate/sphere/atom = style name of this compute command
+
+Examples
+""""""""
+
+.. parsed-literal::
+
+   compute 1 all erotate/sphere/atom
+
+Description
+"""""""""""
+
+Define a computation that calculates the rotational kinetic energy for
+each particle in a group.
+
+The rotational energy is computed as 1/2 I w^2, where I is the moment
+of inertia for a sphere and w is the particle's angular velocity.
+
+.. note::
+
+   For :doc:`2d models <dimension>`, particles are treated as
+   spheres, not disks, meaning their moment of inertia will be the same
+   as in 3d.
+
+The value of the rotational kinetic energy will be 0.0 for atoms not
+in the specified compute group or for point particles with a radius =
+0.0.
+
+**Output info:**
+
+This compute calculates a per-atom vector, which can be accessed by
+any command that uses per-atom values from a compute as input.  See
+:ref:`Section_howto 15 <howto_15>` for an overview of
+LAMMPS output options.
+
+The per-atom vector values will be in energy :doc:`units <units>`.
+
+Restrictions
+""""""""""""
+ none
+
+Related commands
+""""""""""""""""
+
+:doc:`dump custom <dump>`
+
+**Default:** none
+
+
+.. _lws: http://lammps.sandia.gov
+.. _ld: Manual.html
+.. _lc: Section_commands.html#comm