[opedrofunk]

Here's a simple, free preprocessor/mesh generation utility.

Its a plugin for Sketchup (http://www.sketchup.com)(also free) to facilitate mesh generation with Tetgen (http://wias-berlin.de/software/tetgen/) . Supports complex geometry, multiple regions, boundaries, and refinement (both boundary and volume based). Makes generating a quality mesh with boundary markers quick and easy for complex geometry.

Check it out:
https://extensions.sketchup.com/en/c...y-tetgen-tools

Hope this helps!
Regards,
Peter

[soankerabhinay]

I did generate .smesh file using sketchup and was wondering how to run in tetgen and generate mesh files (.ele .node .face)

I never used tetgen directly, but used gibboncode (matlab interface for tetgen) to generate tetgen files!

Thank you!

-Abhinay

[opedrofunk]

Hi,
Sure, no problem. Tetgen is a command-line tool. To start using tetgen you need to:

1) Download tetgen here: http://wias-berlin.de/software/tetgen/

2) Compile (very simple for tetgen)

Tetgen provides many options; these are detailed on the site. However, if using the sketchytetgentools sketchup preprocessor for OpenFoam, the ones of most interest probably are:

-p triangulate a plc (the smesh file)
-q create a quality mesh (also accepts parameters to control quality)
-m use the boundary sizing functions (the .mtr file generated)
-A apply the region/boundary attributes (important)
-a if you specified a tet size on the region, this flag will cause tetgen to enforce that

I typically specify refinement on the boundaries (i.e., using the mtr file), so the command and options I most commonly use are:

$ tetgen -pq1.414Am input_file.smesh

Hopefully, that should be enough to get started. After that, have a look at the documentation and try a few combinations :-)

Kind regards,
Peter

[soankerabhinay]

I did download the file! I am confused with platform I need to run this code $ "tetgen -pq1.414Am input_file.smesh." where do I have to type this command, is it the C++ platform or some other command line tool ?

Sorry for the ignorance! but please bear with my questions! Thank you

[opedrofunk]

Are you running linux? Windows? Mac?

[soankerabhinay]

windows!!!!