Hello, I am trying to simulate Diffusion or Stokes equations on my complex 3D porous media mesh. I can’t seem to define the boundary conditions or get an understanding of how to go about my problem. You can take a look at the .stl file
Thank you for your time
https://ngsolve.org/media/kunena/attachments/1379/blobs.stl
https://ngsolve.org/media/kunena/attachments/1379/blobs.stl
Attachment: blobs.stl