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18273603720

新虫 (小有名气)

[求助] 关于lammps的相关命令,求指教

在小木虫中有个有源程序的博文中第7章中相关于fix的命令结合手册也没看懂,如下f i x 1  a l l  nph  aniso  4712.2526  0.0  4723.4878  0.0  4721.2104  0.0  0.3   博文中是这样解释的:This will bring the pressure from each x, y and z directions to the zero level. The numbers 4712.2526, 4723.4878 and 4721.2104   are from the pressure pxx, pyy, and pzz read from the last timestep within the log file of the previous run,但手册上这个fix nph的格式是
fix ID group-ID style_name keyword value ...
• ID, group-ID are documented in fix command
style_name = nvt or npt or nph
iso or aniso or tri values = Pstart Pstop Pdamp
Pstart,Pstop = scalar external pressure at start/end of run (pressure units)
Pdamp = pressure damping parameter (time units)
是怎么回事?是lammps老版和新版的区别?还有另一个命令:f i x 2  a l l  volume/ rescale 1 z −106.4784 106.4784 我好像在手册上没看到。这命令能用吗?
第三个命令是:dump 1 a l l custom 5000 dump. expand1 . ∗ x y z centro vx vy vz sxx syy szz sxy sxz syz tag epair  中centro  sxx syy szz sxy sxz syz  tag      
epair手册上没有是怎么回事?手册上有的是:custom of custom/mpiio args = list of atom attributes
possible attributes = id, mol, type, element, mass,
x, y, z, xs, ys, zs, xu, yu, zu,
xsu, ysu, zsu, ix, iy, iz,
vx, vy, vz, fx, fy, fz,
q, mux, muy, muz, mu,
radius, diameter, omegax, omegay, omegaz,
angmomx, angmomy, angmomz, tqx, tqy, tqz,
spin, eradius, ervel, erforce,
c_ID, c_ID[N], f_ID, f_ID[N], v_name  。   请教各位了!!!
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18273603720

新虫 (小有名气)

为什么没人进来看看  好尴尬啊!!! 不知道有没有其他比较活跃的关于分子动力学的网站可以 学习?
2楼2016-10-12 10:22:27
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