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ddwy

木虫 (小有名气)

[求助] 分子动力学模拟出错 已有1人参与

大家好:
我用DL_POLY_4.03做分子动力学模拟,CONTROL输入文件是:

temperature 298.15
# pressure 0.001
ensemble nvt hoover  0.5

integrat velocity
restart
steps 3000000
equilibration 1000000
mult  1
scale  5
stats 20
rdf            10
print rdf

traj 1000001 100 0

densvar 20

timestep 0.002
cutoff        12.0

ewald precision 1.0E-6

minimise energy 50 5.0E-03

shake 1.0E-6
mxshak  10000
quaternion tolerance  1.0E-05

job time       99999999999999.0
close time     200000.0

finish
但是计算到第步的时候出现错误,OUTPUT文件为:
----------------------------------------------------------------------------------------------------------------------------------
   174600 -2.8822E+04  2.9815E+02 -3.1606E+04  3.9295E+03 -3.5876E+04  1.7169E+02  1.0398E+02  6.5269E+01  0.0000E+00
349.20000 -2.9405E+04  0.0000E+00  9.0503E+03 -9.0711E+04  3.5875E+04  8.3469E+01  0.0000E+00  6.3803E+04  0.0000E+00
119751.3  4.9579E+04  0.0000E+00  0.0000E+00  0.0000E+00  9.0000E+01  9.0000E+01  9.0000E+01  0.0000E+00 -1.2860E+00

  rolling -2.6814E+04  2.9487E+02 -2.9563E+04  4.1468E+03 -3.4341E+04  3.6908E+02  1.8861E+02  7.4187E+01  0.0000E+00
averages -2.6525E+04  0.0000E+00  6.3658E+03 -9.3434E+04  3.4340E+04  1.4041E+03  0.0000E+00  6.4056E+04  0.0000E+00
           4.9579E+04  0.0000E+00  0.0000E+00  0.0000E+00  9.0000E+01  9.0000E+01  9.0000E+01  0.0000E+00 -8.0166E-02
----------------------------------------------------------------------------------------------------------------------------------

*** warning - global constraint number         6 , with particle numbers:      2885 &      2886 ,
converges to a length of     7.94 Angstroms with a factor  3.1039E+01 ,contributes towards next error !!! ***

*** warning - global constraint number         7 , with particle numbers:      2885 &      2887 ,
converges to a length of    12.88 Angstroms with a factor  8.2412E+01 ,contributes towards next error !!! ***

*** warning - global constraint number         8 , with particle numbers:      2886 &      2887 ,
converges to a length of    18.15 Angstroms with a factor  1.0006E+02 ,contributes towards next error !!! ***

DL_POLY_4 terminated due to error   105

error - shake algorithm (constraints_shake) failed to converge
"OUTPUT" 64939L, 6075639C                     


请各位指点一下,谢谢
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月只蓝

主管区长 (职业作家)

【答案】应助回帖

感谢参与,应助指数 +1
把该问题发到分子模拟版块去吧。
MATLAB、MS小问题、普通问题请发帖求助!时间精力有限,恕不接受无偿私信求助。
2楼2014-09-03 21:15:05
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ddwy

木虫 (小有名气)

引用回帖:
2楼: Originally posted by 月只蓝 at 2014-09-03 21:15:05
把该问题发到分子模拟版块去吧。

谢谢
我喜欢收集微笑没有原因……
3楼2014-09-04 08:50:55
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