Explicit interaction parameters wall-atom

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1

Hi lammps users and developers,

My question is very puntual: Exist any form to define a epsilon parameter of wall-atom pair (using wall potential, 10-4-3).

I defined a epsilon parameter for wall, and use mix-rule to define the parameters with other atoms.But I need a fix value to particular pair.

Thanks for advice.

2

Hi lammps users and developers,

My question is very puntual: Exist any form to define a epsilon parameter of
wall-atom pair (using wall potential, 10-4-3).

I defined a epsilon parameter for wall, and use mix-rule to define the
parameters with other atoms.But I need a fix value to particular pair.

from this it is not very clear what you are asking:

is it that you want to have a different wall - atom interaction for
different types of atoms?
if yes, then you just define a group for each of these atom types and
the a wall acting on each of these groups with different parameters at
the same location.

axel.