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       ERROR on proc 0: Non-numeric atom coords - simulation unstable (../domain.cpp:510)
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units                                real
dimension                     3
boundary                      p p p
atom_style                    full

#read topology
read_data                      bnsystem.data

#Force-field parameters
#B=1,N=1

pair_style                        lj/cut 2.5
bond_style                        harmonic
angle_style                        harmonic
dihedral_style        charmm

special_bonds                   lj/coul 0.0 0.0 0.0

pair_coeff                        * * 1.0 1.0 2.5
bond_coeff                        * 80.0 1.2
angle_coeff                        * 300.0 107.0
dihedral_coeff                  * 3.100 2 180 0.0

#NEMD calculate conductivity

region box block -5 100 -1 100 -1 31.15 units box
region begin block INF INF INF INF -1 7 units box
region hot block INF INF INF INF 7 14 units box
region mid block INF INF INF INF 14 21 units box
region cold block INF INF INF INF 21 27 units box
region end block INF INF INF INF 27 34 units box
region boundary union 2 begin end units box
group begin region begin
group hot region hot
group mid region mid
group cold region cold
group end region end
group boundary region boundary
group new subtract all boundary

velocity new create 300 7986875 mom yes rot yes dist gaussian units box
velocity boundary set 0.0 0.0 0.0 units box

compute Thot hot temp
compute Tcold cold temp
compute Tmid mid temp

#1st equilibration run
fix 1 boundary setforce 0.0 0.0 0.0
fix 2 new nvt temp 300 300 0.025

thermo                          20000
run                             2000
velocity new scale 300
unfix 2

#2nd equilibration run
fix 2 new nve
fix hot all heat 1 50 region hot
fix cold all heat 1 -50 region cold
thermo_style                    custom step temp c_Thot c_Tcold c_Tmid
thermo                          20000
run                             20000

#thermal conductivity calculation
compute                         ke all ke/atom
variable                        temp atom c_ke*1.6e+4/(1.5*1.38)
fix 3 new ave/spatial 1 10000 10000 x (0,0,0) 2 v_temp file temp.profile

thermo_style custom step temp c_Thot c_Tcold c_Tmid

neighbor                        1.0 bin
neigh_modify                    every 1 delay 5 check yes
timestep                         0.001

dump                            1 all atom 10 bn.lammpstrj

run                             500000
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fix hot all heat 1 50 region hot
fix cold all heat 1 -50 region coldÕâ¸öallÊÇ·ñÓÐÎÊÌâ
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