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git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@1923 f3b2605a-c512-4ea7-a41b-209d697bcdaa

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sjplimp 2008-06-24 19:47:40 +00:00
parent cf4e5e7976
commit 27e5475896
2 changed files with 8 additions and 2 deletions
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5
doc/pair_dpd.html
View File

@ -33,7 +33,7 @@ on atom I due to atom J is given as a sum of 3 terms
</P>
<CENTER><IMG SRC = "Eqs/pair_dpd.jpg">
</CENTER>
<P>where FC is a conservative force, FD is a dissipative force, and FR is
<P>where Fc is a conservative force, Fd is a dissipative force, and Fr is
a random force. Rij is a unit vector in the direction Ri - Rj, Vij is
the vector difference in velocities of the two atoms = Vi - Vj, alpha
is a Gaussian random number with zero mean and unit variance, dt is
@ -41,6 +41,9 @@ the timestep size, and w(r) is a weighting factor that varies between
0 and 1. Rc is the cutoff. Sigma is set equal to sqrt(2 T gamma),
where T is a parameter in the pair_style command.
</P>
<P>The pairwise energy associated with this potential is only due to the
conservative force term Fc.
</P>
<P>The following coefficients must be defined for each pair of atoms
types via the <A HREF = "pair_coeff.html">pair_coeff</A> command as in the examples
above, or in the data file or restart files read by the

5
doc/pair_dpd.txt
View File

@ -30,7 +30,7 @@ on atom I due to atom J is given as a sum of 3 terms
:c,image(Eqs/pair_dpd.jpg)
where FC is a conservative force, FD is a dissipative force, and FR is
where Fc is a conservative force, Fd is a dissipative force, and Fr is
a random force. Rij is a unit vector in the direction Ri - Rj, Vij is
the vector difference in velocities of the two atoms = Vi - Vj, alpha
is a Gaussian random number with zero mean and unit variance, dt is
@ -38,6 +38,9 @@ the timestep size, and w(r) is a weighting factor that varies between
0 and 1. Rc is the cutoff. Sigma is set equal to sqrt(2 T gamma),
where T is a parameter in the pair_style command.
The pairwise energy associated with this potential is only due to the
conservative force term Fc.
The following coefficients must be defined for each pair of atoms
types via the "pair_coeff"_pair_coeff.html command as in the examples
above, or in the data file or restart files read by the