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git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@1875 f3b2605a-c512-4ea7-a41b-209d697bcdaa

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sjplimp 2008-05-21 22:45:59 +00:00
parent 2b24ebbca9
commit f1287e57be
2 changed files with 16 additions and 16 deletions
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16
doc/fix_langevin.html
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@ -132,14 +132,14 @@ the specified factor for atoms of that type. This can be useful when
different atom types have different sizes or masses. It can be used different atom types have different sizes or masses. It can be used
multiple times to adjust damp for several atom types. Note that multiple times to adjust damp for several atom types. Note that
specifying a ratio of 2 increases the relaxation time which is specifying a ratio of 2 increases the relaxation time which is
equivalent to the the solvent's viscosity acting on particles with 1/2 equivalent to the solvent's viscosity acting on particles with 1/2 the
the diameter. This is the opposite effect of scale factors used by diameter. This is the opposite effect of scale factors used by the
the <A HREF = "fix_viscous.html">fix viscous</A> command, since the damp factor in <A HREF = "fix_viscous.html">fix viscous</A> command, since the damp factor in fix
fix <I>langevin</I> is inversely related to the gamma factor in fix <I>langevin</I> is inversely related to the gamma factor in fix <I>viscous</I>.
<I>viscous</I>. Also note that the damping factor in fix <I>langevin</I> Also note that the damping factor in fix <I>langevin</I> includes the
includes the particle mass in Ff, unlike fix <I>viscous</I>. Thus the mass particle mass in Ff, unlike fix <I>viscous</I>. Thus the mass and size of
and size of different atom types should be accounted for in the choice different atom types should be accounted for in the choice of ratio
of ratio values. values.
</P> </P>
<P><B>Restart, fix_modify, output, run start/stop, minimize info:</B> <P><B>Restart, fix_modify, output, run start/stop, minimize info:</B>
</P> </P>

16
doc/fix_langevin.txt
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@ -123,14 +123,14 @@ the specified factor for atoms of that type. This can be useful when
different atom types have different sizes or masses. It can be used different atom types have different sizes or masses. It can be used
multiple times to adjust damp for several atom types. Note that multiple times to adjust damp for several atom types. Note that
specifying a ratio of 2 increases the relaxation time which is specifying a ratio of 2 increases the relaxation time which is
equivalent to the the solvent's viscosity acting on particles with 1/2 equivalent to the solvent's viscosity acting on particles with 1/2 the
the diameter. This is the opposite effect of scale factors used by diameter. This is the opposite effect of scale factors used by the
the "fix viscous"_fix_viscous.html command, since the damp factor in "fix viscous"_fix_viscous.html command, since the damp factor in fix
fix {langevin} is inversely related to the gamma factor in fix {langevin} is inversely related to the gamma factor in fix {viscous}.
{viscous}. Also note that the damping factor in fix {langevin} Also note that the damping factor in fix {langevin} includes the
includes the particle mass in Ff, unlike fix {viscous}. Thus the mass particle mass in Ff, unlike fix {viscous}. Thus the mass and size of
and size of different atom types should be accounted for in the choice different atom types should be accounted for in the choice of ratio
of ratio values. values.
[Restart, fix_modify, output, run start/stop, minimize info:] [Restart, fix_modify, output, run start/stop, minimize info:]