mesh_convert
Adapting meshes to generate anisotropic elements
Usage
./omega_h netgen.vol metric_file.mtr adapted.vol
Options:
--adapt_log <vtk_output_directory>
--axes <output.vtu>
--limit <scalar (1.0 good default)>The input mesh and metric are specified first; the third argument is the file to write the adapted mesh to.
If the optional --adapt_log argument is specified as
"adapting", the directory adapting contains a visualization
of adaptation.
Open adapting/triangles/steps.pvd in Paraview
to see the mesh during adaptation.
This series will show a quality field on triangles.
To see edge lengths, open adapting/edges/steps.pvd
in Paraview and look at the length field on
"cells" (edges in this series).
All these files should have a metric field on
vertices as well.
If the optional --axes argument is specified as axes.vtu,
that file will be created with vector fields axis_0 and
axis_1 that can be given to a Paraview Glyph filter to render
major and minor axes of the metric field.
If the optional --limit argument is specified with value 1.0,
the rate of change of the metric over metric distance will
be limited to this rate.
This is useful if you have a few problematic metric values which
are requesting elements larger than can possibly be satisfied.
Desired lengths will be reduced (never increased) as necessary
to limit the metric field to something more satisfiable.