Electrostatic and vanderwals force

[Peymanb]

Hi dear axel
My simulation box has 3 materials
To calculate electrostatic and vanderwaals for any and combine of them, these result are the same.
Vanderwaal are the same for all material
Electrostatic are the same for all material
Calculations are based on these command :

Compute group-id pair lj/cut/coul/long Evdwl
Compute group-id pair lj/cut/coul/long ecoul

[akohlmey]

I don’t understand what the purpose of your post is. There is no question, there is no meaningful explanation, there are just some statements that are quite imprecise. And the commands you quote have syntax errors.

Please have a thorough look at all the information and guidance collected in the following post:

Please Read This First: Guidelines and Suggestions for posting LAMMPS questions

The LAMMPS categories on MatSci.org are the primary way to get help with installing, running, programming the LAMMPS Molecular Dynamics software package and to facilitate exchange between LAMMPS users and developers. The main motivation of using a forum versus the traditional mailing list is, that this allows anybody to join a discussion at any time and try to provide assistance, even when they have not been around when the original question was posted. As the LAMMPS community is growing, the po…

That should help you to formulate better posts which in turn should increase your chances for a more constructive response.