git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@4410 f3b2605a-c512-4ea7-a41b-209d697bcdaa

This commit is contained in:
sjplimp
2010-07-20 19:26:18 +00:00
parent ae0300bb66
commit 89b5110920
6 changed files with 46 additions and 14 deletions

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@ -53,6 +53,10 @@ command will change the simulation box size/shape and the "fix move"
command will change atom positions and velocities in prescribed command will change atom positions and velocities in prescribed
manners. manners.
</P> </P>
<P>IMPORTANT NOTE: Any settings changed by fix adapt are not reset to
their original values at the end of a simulation. They remain changed
to the final values they were set to at the end of the run.
</P>
<P>The <I>pair</I> keyword enables various parameters of potentials defined by <P>The <I>pair</I> keyword enables various parameters of potentials defined by
the <A HREF = "pair_style.html">pair_style</A> command to be changed, if the pair the <A HREF = "pair_style.html">pair_style</A> command to be changed, if the pair
style supports it. The <I>pstyle</I> argument is the name of the pair style supports it. The <I>pstyle</I> argument is the name of the pair
@ -73,7 +77,11 @@ viscosity setting "mu" for <A HREF = "pair_lubricate.html">pair_style lubricate<
Other parameters apply to pairs of atom types within the pair style, Other parameters apply to pairs of atom types within the pair style,
e.g. the prefactor "a" for <A HREF = "pair_soft.html">pair_style soft</A>. If a e.g. the prefactor "a" for <A HREF = "pair_soft.html">pair_style soft</A>. If a
type pair parameter is specified, the <I>I</I> and <I>J</I> settings should be type pair parameter is specified, the <I>I</I> and <I>J</I> settings should be
specified to indicate which pair(s) to apply it to. specified to indicate which pair(s) to apply it to. Note that in all
cases, the <A HREF = "pair_style.html">pair_style</A> and
<A HREF = "pair_coeff.html">pair_coeff</A> commands must be used in the usual manner
to specify these parameters; the fix adapt command simply overrides
the parameters.
</P> </P>
<P>Similar to the <A HREF = "pair_coeff.html">pair_coeff command</A>, I and J can be <P>Similar to the <A HREF = "pair_coeff.html">pair_coeff command</A>, I and J can be
specified in one of two ways. Explicit numeric values can be used for specified in one of two ways. Explicit numeric values can be used for

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@ -43,6 +43,10 @@ command will change the simulation box size/shape and the "fix move"
command will change atom positions and velocities in prescribed command will change atom positions and velocities in prescribed
manners. manners.
IMPORTANT NOTE: Any settings changed by fix adapt are not reset to
their original values at the end of a simulation. They remain changed
to the final values they were set to at the end of the run.
The {pair} keyword enables various parameters of potentials defined by The {pair} keyword enables various parameters of potentials defined by
the "pair_style"_pair_style.html command to be changed, if the pair the "pair_style"_pair_style.html command to be changed, if the pair
style supports it. The {pstyle} argument is the name of the pair style supports it. The {pstyle} argument is the name of the pair
@ -61,7 +65,11 @@ viscosity setting "mu" for "pair_style lubricate"_pair_lubricate.html.
Other parameters apply to pairs of atom types within the pair style, Other parameters apply to pairs of atom types within the pair style,
e.g. the prefactor "a" for "pair_style soft"_pair_soft.html. If a e.g. the prefactor "a" for "pair_style soft"_pair_soft.html. If a
type pair parameter is specified, the {I} and {J} settings should be type pair parameter is specified, the {I} and {J} settings should be
specified to indicate which pair(s) to apply it to. specified to indicate which pair(s) to apply it to. Note that in all
cases, the "pair_style"_pair_style.html and
"pair_coeff"_pair_coeff.html commands must be used in the usual manner
to specify these parameters; the fix adapt command simply overrides
the parameters.
Similar to the "pair_coeff command"_pair_coeff.html, I and J can be Similar to the "pair_coeff command"_pair_coeff.html, I and J can be
specified in one of two ways. Explicit numeric values can be used for specified in one of two ways. Explicit numeric values can be used for

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@ -31,6 +31,11 @@
pair_coeff 1 1 1.8 2.0 pair_coeff 1 1 1.8 2.0
pair_coeff * * pair_coeff * *
</PRE> </PRE>
<PRE>pair_style lubricate 1.0 1 1 1 0 2.3 2.4 1.3 5878598
pair_coeff * *
variable vmu equal 1.0+elapsed/10000
fix 1 all adapt 1 pair lubricate mu * * vmu
</PRE>
<P><B>Description:</B> <P><B>Description:</B>
</P> </P>
<P>Style <I>lubricate</I> computes pairwise interactions between mono-disperse <P>Style <I>lubricate</I> computes pairwise interactions between mono-disperse
@ -44,8 +49,9 @@ viscosity mu. Note that this is dynamic viscosity which has units of
mass/distance/time, not kinematic viscosity. mass/distance/time, not kinematic viscosity.
</P> </P>
<P>The viscosity mu can be varied in a time-dependent manner over the <P>The viscosity mu can be varied in a time-dependent manner over the
course of a simluation. See the <A HREF = "fix_adapt.html">fix adapt</A> command course of a simluation, in which case in which case the pair_style
for details. setting for mu will be overridden. See the <A HREF = "fix_adapt.html">fix adapt</A>
command for details.
</P> </P>
<P>Rc is the outer cutoff specified in the pair_style command, the <P>Rc is the outer cutoff specified in the pair_style command, the
translational velocities of the 2 particles are v1 and v2, the angular translational velocities of the 2 particles are v1 and v2, the angular

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@ -28,6 +28,11 @@ pair_style lubricate 1.5 1 1 1 0 2.3 2.4 1.3 5878598
pair_coeff 1 1 1.8 2.0 pair_coeff 1 1 1.8 2.0
pair_coeff * * :pre pair_coeff * * :pre
pair_style lubricate 1.0 1 1 1 0 2.3 2.4 1.3 5878598
pair_coeff * *
variable vmu equal 1.0+elapsed/10000
fix 1 all adapt 1 pair lubricate mu * * vmu :pre
[Description:] [Description:]
Style {lubricate} computes pairwise interactions between mono-disperse Style {lubricate} computes pairwise interactions between mono-disperse
@ -41,8 +46,9 @@ viscosity mu. Note that this is dynamic viscosity which has units of
mass/distance/time, not kinematic viscosity. mass/distance/time, not kinematic viscosity.
The viscosity mu can be varied in a time-dependent manner over the The viscosity mu can be varied in a time-dependent manner over the
course of a simluation. See the "fix adapt"_fix_adapt.html command course of a simluation, in which case in which case the pair_style
for details. setting for mu will be overridden. See the "fix adapt"_fix_adapt.html
command for details.
Rc is the outer cutoff specified in the pair_style command, the Rc is the outer cutoff specified in the pair_style command, the
translational velocities of the 2 particles are v1 and v2, the angular translational velocities of the 2 particles are v1 and v2, the angular

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@ -49,10 +49,12 @@ commands, or by mixing as described below:
<P>The last coefficient is optional. If not specified, the global soft <P>The last coefficient is optional. If not specified, the global soft
cutoff is used. cutoff is used.
</P> </P>
<P>The <A HREF = "fix_adapt.html">fix adapt</A> command can be used to vary A over the <P>The <A HREF = "fix_adapt.html">fix adapt</A> command can be used to vary A for one
course of a simulation. For example these commands will vary the or more pair types over the course of a simulation, in which case the
prefactor A for all pairwise interactions from 0.0 at the beginning to pair_coeff setting for A must still be specified, but will be
30.0 at the end of a 10,000 step run: overridden. For example these commands will vary the prefactor A for
all pairwise interactions from 0.0 at the beginning to 30.0 at the end
of a 10,000 step run:
</P> </P>
<PRE>variable prefactor equal 30.0*elapsed/10000 <PRE>variable prefactor equal 30.0*elapsed/10000
fix 1 all adapt 1 pair soft a * * prefactor fix 1 all adapt 1 pair soft a * * prefactor

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@ -46,10 +46,12 @@ cutoff (distance units) :ul
The last coefficient is optional. If not specified, the global soft The last coefficient is optional. If not specified, the global soft
cutoff is used. cutoff is used.
The "fix adapt"_fix_adapt.html command can be used to vary A over the The "fix adapt"_fix_adapt.html command can be used to vary A for one
course of a simulation. For example these commands will vary the or more pair types over the course of a simulation, in which case the
prefactor A for all pairwise interactions from 0.0 at the beginning to pair_coeff setting for A must still be specified, but will be
30.0 at the end of a 10,000 step run: overridden. For example these commands will vary the prefactor A for
all pairwise interactions from 0.0 at the beginning to 30.0 at the end
of a 10,000 step run:
variable prefactor equal 30.0*elapsed/10000 variable prefactor equal 30.0*elapsed/10000
fix 1 all adapt 1 pair soft a * * prefactor :pre fix 1 all adapt 1 pair soft a * * prefactor :pre