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cl1994861

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[ÇóÖú] ¹ØÓÚfix ave/chunk commandÎÊÌâ ÒÑÓÐ1È˲ÎÓë

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echo screen
variable        x equal 10
variable        y equal 10
variable        z equal 20

variable        rho equal 0.6
variable        t equal 1.35
variable        rc equal 2.5

units                lj
atom_style        atomic

lattice                fcc ${rho}
region                box block 0 $x 0 $y 0 $z
create_box        1 box
create_atoms        1 box
mass                1 1.0

velocity        all create $t 87287

pair_style        lj/cut ${rc}
pair_coeff        1 1 1.0 1.0

neighbor        0.3 bin
neigh_modify        delay 0 every 1

# 1st equilibration run

fix                1 all nvt temp $t $t 0.5
thermo                100
run                1000

velocity        all scale $t

unfix                1

# 2nd equilibration run

compute                ke all ke/atom
variable        temp atom c_ke/1.5

fix                1 all nve

compute layers all chunk/atom bin/1d z lower 1 units reduced
fix                2 all ave/chunk 10 100 1000 layers v_temp file profile.mp

fix                3 all thermal/conductivity 10 z 20

variable        tdiff equal f_2[11][3]-f_2[1][3]
thermo_style        custom step temp epair etotal f_3 v_tdiff

thermo                1000
run                20000

# thermal conductivity calculation
# reset fix thermal/conductivity to zero energy accumulation

fix                3 all thermal/conductivity 10 z 20

fix             ave all ave/time 1 1 1000 v_tdiff ave running
thermo_style        custom step temp epair etotal f_3 v_tdiff f_ave

run                20000

¹ØÓÚfix ave/chunk  commandÎÊÌâ
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