git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@774 f3b2605a-c512-4ea7-a41b-209d697bcdaa

This commit is contained in:
sjplimp 2007-08-03 19:53:18 +00:00
parent 5e8f3a7b93
commit 6712ee3501
6 changed files with 35 additions and 32 deletions

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@ -47,11 +47,14 @@ orthogonal box.
</P> </P>
<P><B>Restrictions:</B> <P><B>Restrictions:</B>
</P> </P>
<P>When this command is used, no <A HREF = "dump.html">dumps</A> can be defined, nor <P>At the point in the input script when this command is issued, no
can <A HREF = "fix_ave_spatial.html">fix ave/spatial</A> or <A HREF = "fix_deform.html">fix <A HREF = "dump.html">dumps</A> can be active, nor can a <A HREF = "fix_ave_spatial.html">fix
deform</A> be defined. This is because these commands ave/spatial</A> or <A HREF = "fix_deform.html">fix deform</A> be
test whether the simulation box is orthogonal or not when they are active. This is because these commands test whether the simulation
first issued. box is orthogonal when they are first issued. Note that these
commmands can appear in your script before a change_box command is
issued, so long as an <A HREF = "undump.html">undump</A> or <A HREF = "unfix.html">unfix</A>
command is also used to turn them off.
</P> </P>
<P><B>Related commands:</B> none <P><B>Related commands:</B> none
</P> </P>

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@ -43,11 +43,14 @@ orthogonal box.
[Restrictions:] [Restrictions:]
When this command is used, no "dumps"_dump.html can be defined, nor At the point in the input script when this command is issued, no
can "fix ave/spatial"_fix_ave_spatial.html or "fix "dumps"_dump.html can be active, nor can a "fix
deform"_fix_deform.html be defined. This is because these commands ave/spatial"_fix_ave_spatial.html or "fix deform"_fix_deform.html be
test whether the simulation box is orthogonal or not when they are active. This is because these commands test whether the simulation
first issued. box is orthogonal when they are first issued. Note that these
commmands can appear in your script before a change_box command is
issued, so long as an "undump"_undump.html or "unfix"_unfix.html
command is also used to turn them off.
[Related commands:] none [Related commands:] none

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@ -46,13 +46,13 @@ velocity which is used to compute the temperature.
</P> </P>
<P>IMPORTANT NOTE: <A HREF = "fix_deform.html">Fix deform</A> has an option for <P>IMPORTANT NOTE: <A HREF = "fix_deform.html">Fix deform</A> has an option for
remapping either atom coordinates or velocities to the changing remapping either atom coordinates or velocities to the changing
simulation box. To use this compute, the fix should NOT remap atom simulation box. To use this compute, fix deform should NOT remap atom
positions, but rather should let atoms respond to the changing box by positions, but rather should let atoms respond to the changing box by
adjusting their own velocities (or let fix deform remap the atom adjusting their own velocities (or let fix deform remap the atom
velocities). If the fix does remap atom positions, their velocity is velocities). If fix deform does remap atom positions, their velocity
not changed, and thus they do not have the streaming velocity assumed is not changed, and thus they do not have the streaming velocity
by this compute. LAMMPS will warn you if this setting is not assumed by this compute. LAMMPS will warn you if the fix deform
consistent. setting is not consistent with this compute.
</P> </P>
<P>The temperature is calculated by the formula KE = dim/2 N k T, where <P>The temperature is calculated by the formula KE = dim/2 N k T, where
KE = total kinetic energy of the group of atoms (sum of 1/2 m v^2), KE = total kinetic energy of the group of atoms (sum of 1/2 m v^2),

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@ -43,13 +43,13 @@ velocity which is used to compute the temperature.
IMPORTANT NOTE: "Fix deform"_fix_deform.html has an option for IMPORTANT NOTE: "Fix deform"_fix_deform.html has an option for
remapping either atom coordinates or velocities to the changing remapping either atom coordinates or velocities to the changing
simulation box. To use this compute, the fix should NOT remap atom simulation box. To use this compute, fix deform should NOT remap atom
positions, but rather should let atoms respond to the changing box by positions, but rather should let atoms respond to the changing box by
adjusting their own velocities (or let fix deform remap the atom adjusting their own velocities (or let fix deform remap the atom
velocities). If the fix does remap atom positions, their velocity is velocities). If fix deform does remap atom positions, their velocity
not changed, and thus they do not have the streaming velocity assumed is not changed, and thus they do not have the streaming velocity
by this compute. LAMMPS will warn you if this setting is not assumed by this compute. LAMMPS will warn you if the fix deform
consistent. setting is not consistent with this compute.
The temperature is calculated by the formula KE = dim/2 N k T, where The temperature is calculated by the formula KE = dim/2 N k T, where
KE = total kinetic energy of the group of atoms (sum of 1/2 m v^2), KE = total kinetic energy of the group of atoms (sum of 1/2 m v^2),

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@ -50,9 +50,8 @@
V = change tilt factor at this velocity (distance/time units), V = change tilt factor at this velocity (distance/time units),
effectively an engineering shear strain rate effectively an engineering shear strain rate
<I>erate</I> value = R <I>erate</I> value = R
R = engineering shear strain rate (1/time units) R = engineering shear strain rate (1/time units)
</PRE> <I>trate</I> value = R
<PRE> <I>trate</I> value = R
R = true shear strain rate (1/time units) R = true shear strain rate (1/time units)
</PRE> </PRE>
<LI>zero or more keyword/value pairs may be appended <LI>zero or more keyword/value pairs may be appended
@ -337,10 +336,9 @@ used. This is because <A HREF = "fix_nvt_sllod.html">fix nvt/sllod</A> adjusts
atom positions and velocities to provide a velocity profile that atom positions and velocities to provide a velocity profile that
matches the changing box size/shape. Thus atom coordinates should NOT matches the changing box size/shape. Thus atom coordinates should NOT
be remapped by fix deform, but velocities SHOULD be when atoms cross be remapped by fix deform, but velocities SHOULD be when atoms cross
periodic boundaries, since when atoms cross periodic boundaries since periodic boundaries, since that is consistent with maintaining the
that is consistent with maintaining the velocity profile created by velocity profile already created by fix nvt/sllod. LAMMPS will warn
fix nvt/sllod. LAMMPS will warn you if this settings is not you if the <I>remap</I> setting is not consistent with fix nvt/sllod.
consistent.
</P> </P>
<P>The <I>units</I> keyword determines the meaning of the distance units used <P>The <I>units</I> keyword determines the meaning of the distance units used
to define various arguments. A <I>box</I> value selects standard distance to define various arguments. A <I>box</I> value selects standard distance

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@ -43,7 +43,7 @@ parameter = {x} or {y} or {z} or {xy} or {xz} or {yz}
V = change tilt factor at this velocity (distance/time units), V = change tilt factor at this velocity (distance/time units),
effectively an engineering shear strain rate effectively an engineering shear strain rate
{erate} value = R {erate} value = R
R = engineering shear strain rate (1/time units) :pre R = engineering shear strain rate (1/time units)
{trate} value = R {trate} value = R
R = true shear strain rate (1/time units) :pre R = true shear strain rate (1/time units) :pre
@ -326,10 +326,9 @@ used. This is because "fix nvt/sllod"_fix_nvt_sllod.html adjusts the
atom positions and velocities to provide a velocity profile that atom positions and velocities to provide a velocity profile that
matches the changing box size/shape. Thus atom coordinates should NOT matches the changing box size/shape. Thus atom coordinates should NOT
be remapped by fix deform, but velocities SHOULD be when atoms cross be remapped by fix deform, but velocities SHOULD be when atoms cross
periodic boundaries, since when atoms cross periodic boundaries since periodic boundaries, since that is consistent with maintaining the
that is consistent with maintaining the velocity profile created by velocity profile already created by fix nvt/sllod. LAMMPS will warn
fix nvt/sllod. LAMMPS will warn you if this settings is not you if the {remap} setting is not consistent with fix nvt/sllod.
consistent.
The {units} keyword determines the meaning of the distance units used The {units} keyword determines the meaning of the distance units used
to define various arguments. A {box} value selects standard distance to define various arguments. A {box} value selects standard distance