ArrayThanks for the suggestion. I tried that and the result was a failed mesh, like in the pictures below. When seeding tets, it just did not mesh the second volume. When seeding hex, the mesh was too skewed towards the boundaries of the volumes.nI don't really know how to build this kind of hex mesh in workbench. I tried using Fluent CFD meshing instead, with the watertight geometry workflow. Almost everything right, until it was time to generate the volume mesh. I got some error from the previous step and the Create volume mesh does not display anything. Any idea about what this could be? Also, in your opinion, is it better to use this Fluent Meshing instead of workbench meshing?nThanks!n