[lammps-users] How can i set dielectric constant of solvent in LAMMPS?

Hi, Alex,
Thanks so much for your reply.
I means, for each kind of solvent, it has dielectric constant,e.g.
80.4 for water at 20oC.

you'll have to explain a bit more about what your system is
that you want to simulate, before somebody can give you a
proper answer.

I set real as unit in my simulation, and i like to set the dielectric
constant of water in my simulation as 80.4.

this sounds like you do have explicit water molecules in your
system. if that is the case, why do you want to set the
dielectric constant at all?

Does that mean i just set dielectric as 80.4?

please *read* the documentation.

the dielectric constant is dimensionless (it is eps/eps0) and
thus does not depend on what units you choose.

axel.

Hi, Alex,
Thanks.
I just do simulations for interaction between polymers.
There are implicit solvent in my systems.
So i want to set dielectric for the properties of implicit solvent.
For example, if i consider the implicit solvent as water, how
can i set the dielectric command in LAMMPS?
Thanks.
Houyang

Hi, Alex,
Thanks.
I just do simulations for interaction between polymers.
There are implicit solvent in my systems.
So i want to set dielectric for the properties of implicit solvent.
For example, if i consider the implicit solvent as water, how
can i set the dielectric command in LAMMPS?

so which part of the documentation of the "dielectric"
command do you not understand??

as i wrote before it is trivial to use.

axel.