LAMMPS

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1

HELLO.DEAR
i’m working on lammps which contains water and nanofluid cu.I’ve attached input code .when i run it it shows this error.“must define pair style before pair coeff”.i do’nt know what to do.excuse me .please help me

input.txt (1.33 KB)

2

HELLO.DEAR
i’m working on lammps which contains water and nanofluid cu.I’ve attached input code .when i run it it shows this error.“must define pair style before pair coeff”.i do’nt know what to do.excuse me .please help me

Please simply follow the advice that lammps gave you.

3

HELLO.DEAR
i’m working on lammps which contains water and nanofluid cu.I’ve attached input code .when i run it it shows this error.“must define pair style before pair coeff”.i do’nt know what to do.excuse me .please help me

Please simply follow the advice that lammps gave you.

Please also note, that pair coefficients may be embedded in your data file.

4

Oh, and your cutoffs and pair

​potential ​
parameters look completely bogus to me for use with​ the "
units real"​ setting. the values entered seem to be in SI units instead. please have a closer look at the documentation of the units command.