In summary, your papers on the numerical simulations of shot peening processes were rejected by Computational Materials Science but easily got through the review process at Surface and Coatings Technology and Journal of Thermal Spray Technology, and you are wondering:
"Is the low level of review questions a reflection on the quality of
the journal? Am ...
I would limit my answer to the situation where you have only two scales in your system. For more complicated problems, it's easy to generalize the concept provided here. Usually, the computational technique that works with the smallest scale in your system sends information to the higher-level scale back and forth. For example, let's say you want to simulate ...
One example of multi-scale modeling in materials modeling is coarse-grain modeling
In these examples larger systems can be studied in a more efficient way by treating clusters of atoms, often monomers or residues of a polymer as a single structure or "bead".
Each bead is parameterized to capture the feature of the underlying atoms, for example polarity ...
It would help to know what you need the potentials for, since this will affect the techniques that are necessary to evaluate the potential. Point charges are trivial, as the potential generated by each charge is just -Z/r; the trick is mostly how to make the evaluation efficient, this is achieved with methods like fast multipoles or particle mesh Ewald. (...
Here is a short video tutorial to explain the following points about FEM:
Why study FEM
Engineering systems and FEM
What is FEM?
The power of FEM
Hope it helps.
I recommend you to visit and go through the COMSOL Multiphysics site.
COMSOL software is based on finite element method (FEM) with applications in several areas of Physics. In the site, you can request a demonstration of the software (so you will have the experience to use FEM in practice) and also can visit the WEBMINARS section that is full of applications ...
I think you may be not clear on how to find a suitable journal for your paper. I suggest that you can copy the title and abstract, then paste them to the websites of Elsevier or Web of Science. These websites will recommend which journal you should submit to.
Elsevier and Web of Science