Problem w/ export into an AcuSolve-file .inp

Hi everyone,

the following case is given:

For CFD first of all I imported a CAD geometry of a fluid. Then I 2D-meshed the surfaces (no problems, no free-edges, all trias...) and named it 'wall'. Subsequently a 3D tetramesh was done.

For the above process I organized some 2D elements into 'inlet' and 'outlet'-collectors in case of boundary layers (BL). The tetrameshed core + BL were organized into 1 collector named 'fluid'. Generating the ^faces of the fluid-colletor, some of this elements were organized into collectors called 'inflow' and 'ourflow'.

The next step is to export the 'fluid', 'in- and outflow' and 'wall' into an AcuSolve .inp file. The remain elements are set to invisible!

At the end of the export-process the following error message is displayed:

'No valid 3d element found in neighborhood of tria element' - export failed!

I found a solution: Ignoring the 2D mesh called 'wall' (delete or make it invisible), I renamed the elements of ^faces (after organizing some elements into 'inflow' and 'outflow') into 'wall'.
The following export works!

But my concern is, if the new 'wall' (origin: ^faces) is similar to the old 'wall' (origin: 2D mesh on CAD geometry)???