How can I interpolate data for post-processing of a fluid-structure interaction simulation?

Hi there,

This is a general workflow question regarding post-processing of a fluid-structure interaction simulation I have conducted in ANSYS (although the FEA software doesn't really matter I suppose). In fluid-structure interaction simulations, there is a solid domain and a fluid domain. I want to interpolate stress and strain, for example, within the solid domain, and velocity and pressure in the fluid domain. The output of my simulation is two huge tables with 3D coordinates of all the points on my solid and fluid mesh respectively, as well as corresponding variables of interest. When I try techniques such as scatteredInterpolant, they do not work because they interpolate points that aren't within the domain I'm looking at (i.e. interpolating stress/strain values in the fluid part, which doesn't have stress/strain associated with it). Is there a way I can interpolate data only within my mesh, without displaying the mesh itself (I just want to be displaying slices of my geometry, with a colormap of a variable like stress, without seeing any tetrahedrons or element faces)?

Hopefully this makes sense - I'm not looking for specific code, just ideas for workflow and functions to use since I have no idea how to even go about this kind of interpolation problem. Thanks!

-Ethan