24Mar17 patch sync with SVN
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<!-- HTML_ONLY -->
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<HEAD>
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<TITLE>LAMMPS Users Manual</TITLE>
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<META NAME="docnumber" CONTENT="17 Mar 2017 version">
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<META NAME="docnumber" CONTENT="24 Mar 2017 version">
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<META NAME="author" CONTENT="http://lammps.sandia.gov - Sandia National Laboratories">
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<META NAME="copyright" CONTENT="Copyright (2003) Sandia Corporation. This software and manual is distributed under the GNU General Public License.">
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</HEAD>
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<H1></H1>
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LAMMPS Documentation :c,h3
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17 Mar 2017 version :c,h4
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24 Mar 2017 version :c,h4
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Version info: :h4
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@ -82,13 +82,13 @@ others). See "(MacKerell)"_#pair-MacKerell for a description of the
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CHARMM force field.
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The styles with {charmm} (not {charmmfsw} or {charmmfsh}) in their
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name are the older, original LAMMPS implemetations. They compute the
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name are the older, original LAMMPS implementations. They compute the
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LJ and Coulombic interactions with an energy switching function (esw,
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a cubic polynomial), which ramps the energy smoothly to zero between
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the inner and outer cutoff. This can cause irregularities in
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pair-wise forces (due to the discontinuous 2nd derivative of energy at
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the boundaries of the switching region), which in some cases can
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result in substantial artifacts in an MD simulation.
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a cubic polynomial, shown in the formula below), which ramps the
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energy smoothly to zero between the inner and outer cutoff. This can
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cause irregularities in pair-wise forces (due to the discontinuous 2nd
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derivative of energy at the boundaries of the switching region), which
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in some cases can result in detectable artifacts in an MD simulation.
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The newer styles with {charmmfsw} or {charmmfsh} in their name replace
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the energy switching with force switching (fsw) and force shifting
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@ -107,8 +107,10 @@ The general CHARMM formulas are as follows
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:c,image(Eqs/pair_charmm.jpg)
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where the specific form of the switching or shifting function S(r) is
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given in the "(Steinbach)"_#Steinbach paper.
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where S(r) is the energy switching function mentioned above for the
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{charmm} styles. See the "(Steinbach)"_#Steinbach paper for the
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functional forms of the force switching and force shifting functions
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used in the {charmmfsw} and {charmmfsh} styles.
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When using the {lj/charmm/coul/charmm styles}, both the LJ and
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Coulombic terms require an inner and outer cutoff. They can be the
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@ -253,6 +255,6 @@ the MOLECULE and KSPACE packages are installed by default.
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[(MacKerell)] MacKerell, Bashford, Bellott, Dunbrack, Evanseck, Field,
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Fischer, Gao, Guo, Ha, et al, J Phys Chem, 102, 3586 (1998).
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:link(Stenibach)
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:link(Steinbach)
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[(Steinbach)] Steinbach, Brooks, J Comput Chem, 15, 667 (1994).
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@ -1 +1 @@
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#define LAMMPS_VERSION "17 Mar 2017"
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#define LAMMPS_VERSION "24 Mar 2017"
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