forked from lijiext/lammps
git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@12351 f3b2605a-c512-4ea7-a41b-209d697bcdaa
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@ -155,13 +155,16 @@ data file with no atoms can be used if you wish to add unbonded atoms
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via the <A HREF = "create_atoms.html">create atoms</A> command, e.g. for a
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percolation simulation.
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</P>
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<P>IMPORTANT NOTE: LAMMPS also maintains a data structure that stores a
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list of 1st, 2nd, and 3rd neighbors of each atom (within the bond
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<P>IMPORTANT NOTE: LAMMPS stores and maintains a data structure with a
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list of the 1st, 2nd, and 3rd neighbors of each atom (within the bond
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topology of the system) for use in weighting pairwise interactions for
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bonded atoms. Adding a bond adds a single entry to this list. The
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"extra special per atom" parameter must typically be set to allow for
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it. There are 3 ways to do this. See the <A HREF = "read_data.html">read_data</A>
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or <A HREF = "create_box.html">create_box</A> or "special_bonds extra" commands for
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bonded atoms. Note that adding a single bond always adds a new 1st
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neighbor but may also induce *many* new 2nd and 3rd neighbors,
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depending on the molecular topology of your system. The "extra
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special per atom" parameter must typically be set to allow for the new
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maximum total size (1st + 2nd + 3rd neighbors) of this per-atom list.
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There are 3 ways to do this. See the <A HREF = "read_data.html">read_data</A> or
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<A HREF = "create_box.html">create_box</A> or "special_bonds extra" commands for
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details.
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</P>
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<P>IMPORTANT NOTE: Even if you do not use the <I>atype</I>, <I>dtype</I>, or
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@ -143,13 +143,16 @@ data file with no atoms can be used if you wish to add unbonded atoms
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via the "create atoms"_create_atoms.html command, e.g. for a
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percolation simulation.
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IMPORTANT NOTE: LAMMPS also maintains a data structure that stores a
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list of 1st, 2nd, and 3rd neighbors of each atom (within the bond
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IMPORTANT NOTE: LAMMPS stores and maintains a data structure with a
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list of the 1st, 2nd, and 3rd neighbors of each atom (within the bond
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topology of the system) for use in weighting pairwise interactions for
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bonded atoms. Adding a bond adds a single entry to this list. The
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"extra special per atom" parameter must typically be set to allow for
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it. There are 3 ways to do this. See the "read_data"_read_data.html
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or "create_box"_create_box.html or "special_bonds extra" commands for
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bonded atoms. Note that adding a single bond always adds a new 1st
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neighbor but may also induce *many* new 2nd and 3rd neighbors,
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depending on the molecular topology of your system. The "extra
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special per atom" parameter must typically be set to allow for the new
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maximum total size (1st + 2nd + 3rd neighbors) of this per-atom list.
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There are 3 ways to do this. See the "read_data"_read_data.html or
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"create_box"_create_box.html or "special_bonds extra" commands for
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details.
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IMPORTANT NOTE: Even if you do not use the {atype}, {dtype}, or
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@ -13,7 +13,7 @@
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</H3>
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<P><B>Syntax:</B>
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</P>
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<PRE>fix ID group-ID N oneway region-ID direction
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<PRE>fix ID group-ID oneway N region-ID direction
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</PRE>
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<UL><LI>ID, group-ID are documented in <A HREF = "fix.html">fix</A> command
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@ -29,9 +29,9 @@
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</UL>
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<P><B>Examples:</B>
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</P>
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<PRE>fix ions 10 oneway semi -x
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fix all 1 oneway left -z
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fix all 1 oneway right z
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<PRE>fix ions oneway 10 semi -x
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fix all oneway 1 left -z
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fix all oneway 1 right z
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</PRE>
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<P><B>Description:</B>
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</P>
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@ -10,7 +10,7 @@ fix oneway command :h3
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[Syntax:]
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fix ID group-ID N oneway region-ID direction :pre
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fix ID group-ID oneway N region-ID direction :pre
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ID, group-ID are documented in "fix"_fix.html command :ulb,l
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oneway = style name of this fix command :l
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@ -21,9 +21,9 @@ direction = {x} or {-x} or {y} or {-y} or {z} or {-z} = coordinate and direction
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[Examples:]
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fix ions 10 oneway semi -x
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fix all 1 oneway left -z
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fix all 1 oneway right z :pre
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fix ions oneway 10 semi -x
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fix all oneway 1 left -z
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fix all oneway 1 right z :pre
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[Description:]
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@ -171,18 +171,24 @@ interaction between atoms 2 and 5 will be unaffected (full weighting
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of 1.0). If the <I>dihedral</I> keyword is specified as <I>no</I> which is the
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default, then the 2,5 interaction will also be weighted by 0.5.
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</P>
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<P>The <I>extra</I> keyword is used when additional bonds will be created
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<P>The <I>extra</I> keyword can be used when additional bonds will be created
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during a simulation run, e.g. by the <A HREF = "fix_bond_create.html">fix
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bond/create</A> command. It can also be used if
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molecules will be added to the system, e.g. via the <A HREF = "fix_deposit.html">fix
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deposit</A>, or <A HREF = "fix_pour.html">fix pour</A> commands, which
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will have atoms with more special neighbors than any atom in the
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current system has. A list of 1-2,1-3,1-4 neighbors for each atom is
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calculated and stored by LAMMPS. If new bonds are created (or
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molecules added with atoms with more special neighbors), the list
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needs to grow. Using the <I>extra</I> keyword leaves empty space in the
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list for N additional bonds to be added. If you do not do this, you
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may get an error when bonds (or molecules) are added.
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current system has.
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</P>
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<P>IMPORTANT NOTE: LAMMPS stores and maintains a data structure with a
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list of the 1st, 2nd, and 3rd neighbors of each atom (within the bond
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topology of the system). If new bonds are created (or molecules added
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containing atoms with more special neighbors), the size of this list
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needs to grow. Note that adding a single bond always adds a new 1st
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neighbor but may also induce *many* new 2nd and 3rd neighbors,
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depending on the molecular topology of your syste. Using the <I>extra</I>
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keyword leaves empty space in the list for this N additional 1st, 2nd,
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or 3rd neighbors to be added. If you do not do this, you may get an
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error when bonds (or molecules) are added.
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</P>
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<P>IMPORTANT NOTE: If you reuse this command in an input script, you
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should set all the options you need each time. This command cannot be
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@ -165,18 +165,24 @@ interaction between atoms 2 and 5 will be unaffected (full weighting
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of 1.0). If the {dihedral} keyword is specified as {no} which is the
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default, then the 2,5 interaction will also be weighted by 0.5.
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The {extra} keyword is used when additional bonds will be created
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The {extra} keyword can be used when additional bonds will be created
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during a simulation run, e.g. by the "fix
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bond/create"_fix_bond_create.html command. It can also be used if
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molecules will be added to the system, e.g. via the "fix
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deposit"_fix_deposit.html, or "fix pour"_fix_pour.html commands, which
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will have atoms with more special neighbors than any atom in the
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current system has. A list of 1-2,1-3,1-4 neighbors for each atom is
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calculated and stored by LAMMPS. If new bonds are created (or
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molecules added with atoms with more special neighbors), the list
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needs to grow. Using the {extra} keyword leaves empty space in the
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list for N additional bonds to be added. If you do not do this, you
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may get an error when bonds (or molecules) are added.
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current system has.
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IMPORTANT NOTE: LAMMPS stores and maintains a data structure with a
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list of the 1st, 2nd, and 3rd neighbors of each atom (within the bond
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topology of the system). If new bonds are created (or molecules added
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containing atoms with more special neighbors), the size of this list
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needs to grow. Note that adding a single bond always adds a new 1st
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neighbor but may also induce *many* new 2nd and 3rd neighbors,
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depending on the molecular topology of your syste. Using the {extra}
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keyword leaves empty space in the list for this N additional 1st, 2nd,
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or 3rd neighbors to be added. If you do not do this, you may get an
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error when bonds (or molecules) are added.
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IMPORTANT NOTE: If you reuse this command in an input script, you
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should set all the options you need each time. This command cannot be
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