Mesh movement and distortion in SU2 mesh

Official adapters and tutorials
1

Hi,
I am working with FSI coupling between SU2 and a structural mesh, using the mapping:rbf-thin-plate-splines . The mesh movement/deformation seems to be only around the interface and the fluid elements close to the inteface look pretty distorted, as in this picture:

mesh
mesh1482×833 532 KB

The mesh movement in a similar case with OpenFOAM (such as the vertical flap tutorial) seems to me much more “diffused” and the elements less distorted. I would like to ask:

  • Are there differences in the mapping with different solvers?
  • which kind of mapping would be better in my case? I have read something about rbf:gaussian and/or the rbfShape.py file but I am not sure how to use it
    Thank you
    Claudio