[jordan.tracey]

Hello,

I am creating a shell and tube heat exchanger. I imported stl files from freeCAD and call them through snappyHexMesh. There are 14 parts as follows:

1 & 2 = plates between shell and tube sides
3 - 9 = tubes
10 - 13 = baffles
14 = outside shell including inlets / outlets

When I run "snappyHexMesh -overwrite" and "paraFoam" the geometry is all there however the middle of part 14 (the part the surrounds the tubes/baffles is snapped out. This is strange because Part 14 that surrounds the ends of the exchanger is still there.

So I changed the geometry a bit:

1) I removed parts 1,2 and 14.
2) I created 5 new cylinders:
- 2 for the ends of the exchanger
- 2 for parts 1 and 2 (to separate the shell from the tube side
- and 1 for around the tubes/baffles (the part that was snapped out before)

However I am still getting the same issue of the middle cylinder being snapped out.

Is there a particular command that I can use to ensure that the snappy keeps all the parts contained within the middle shell?

P.s. I set my location in mesh inside the middle shell.

Any help would be greatly appreciated.

[KaLium]

Is the part (#14) completely inside your blockMesh?

Can you send pictures? I have a hard time understanding your problem.