[lammps-users] pair_style coul/long

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1

Hello,

I have a question on “pair_style coul/long”:
when I use this pair style, charges are treated as a point charge ?
If so, how can I make charges distributed in a grid, i.e. multi-grid method?
(reference: Groot, 2003, Journal of chemical physics, v.118, p.11265)
Could anyone help?

Thank you.

2

Hello,
I have a question on "pair_style coul/long":
when I use this pair style, charges are treated as a point charge ?
If so, how can I make charges distributed in a grid, i.e. multi-grid method?
(reference: Groot, 2003, Journal of chemical physics, v.118, p.11265)

with a text editor, a c++ compiler, and a bit of time.

Could anyone help?

no, but let us know when you have implemented DPD with charges.
i know some people that would like to use it as well.

thanks,
   axel.

3

Pair style coul/long is meant to be used with a Kspace solver
like Ewald or PPPM. The latter smears charge over a grid
and uses an FFT to solve Poisson's eq. A multi-grid method
would be an alternative to the Kspace FFT method, but likely
slower.

Steve