Hello. Respected Lammps users, I am actually try to collide the molten silver block to the substrate of diamond. When I use Velocity set command in my script and apply increasing velocity like Vy 50 100 300 etc “velocity water set 0.0 -300 0”, it is not working and the block slows down. I have visualized dump file in ovito. Kindly check my script. Here is my script.
Thanks for cooperation
units metal
dimension 3
boundary p p p
atom_style atomic
region simbox block -49 87 -75 240 -89 195 units box
lattice fcc 3.567
region substratediamond block -60 85 70 100 -30 140 units box
region ironball block -21 61 110 160 35 75 side in units box
#lattice bcc 2.856
lattice fcc 4.09
create_box 2 simbox
create_atoms 1 region substratediamond
create_atoms 2 region ironball
group slab region substratediamond
group water region ironball
mass 1 12
mass 2 107
group slab type 1
group water type 2
pair_style hybrid eam lj/cut 17
pair_coeff 1 1 none
pair_coeff 22 22 eam Ag_u3.eam
pair_coeff 1 2 lj/cut 0.02 3
thermo 1
thermo_style custom step lx ly lz press pxx pyy pzz pe temp
thermo_modify norm no
#minimize 1.0e-21 1.0e-21 10000 10000
timestep 0.001
velocity water create 1700 12345 mom yes rot no
velocity water scale 1700
fix 1 water nvt temp 1700 1700 0.1
velocity water set 0.0 -300 0
dump movie all atom 100 m.pb
run 3000000