FAQ: Tips on UTM (Underhood Thermal Management)
How can I get the best mesh for UTM (Underhood Thermal Management)?
A big problem with UTM type meshes is volumes merging when
they should not because of holes in the surface mesh.
Here are some tips to get around this
1. Use the -UTM command line option. This invokes an internal
flag to minimize the number of holes in a mesh. The
mesh method must be set to External when using
this option. Harpoon will keep all volumes as not just
the external one.
2. Use the -fillhole <number> option. An automatic hole
filling routine is used towards the end of meshing.
The default value is 5. This means that all holes with
edges less than 5 will be automatically filled (if possible).
Changing this to , say, 10 would fix more holes and
save manual fixing.
usage: harpoon -UTM -fillhole 10
N.B. At least one Harpoon farwall must be used for this option
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