[matthiasd]

Hi,

I have a STL file, which I later want to process via snappyHexMesh. But first I have to "clean" the file and fill some holes in it.
My problem is: The file is very large! So when I try tools with a GUI (like salome, netfabb-basic, ...), they usually crash or are very slow and tedious to work with. Therefor I am looking for a command line solution.

I found "admesh", which is easy to use and does a great job. The only downside: I did not manage to use admesh on a STL file with multiple regions.
As I am not sure if regions is the correct term here, what I mean are several solid blocks within one file:

solid region1
...
endsolid region1
solid region2
...
endsolid region 2

I use those regions mainly for two reasons:
1. I want to different refinement levels within SHM for those regions
2. I can later apply different material properties (in my case heating rates) to those regions.

But as I said: So far I was not able to do this with admesh, as it produces an error when reading a multi region STL file.

Do you either know a way to make this work with admesh? Or do you maybe know of a command line tool, which is capable of the described tasks?


Additionally I want to add: I am quite new to CFD and OpenFOAM. So if you have comments on my general approach, this is also much appreciated:
1. I generate the STL-files from GeoTiff-files.
2. I cat the different STL-files together in one big file.
3. This works pretty well so far. The STL-surface looks good and there is no gap where two regions touch.
4. Now I would like to clean/repair the one big file with the different regions.


I hope you can help me and I appreciate every hint or suggestion!

Thank you very much in advance,
Matthias