Mesh tolerance

[lorenzo.mattioni]

In a MoM code the unknowns are defined between pairs of adjacent
triangle. Our code needs a tolerance in order to check if two
triangles are connected, following the relation: <<distance between
nodes lower than tolerance>>. This tolerance corresponds to one
usually used in a mesher to collapse the nodes. Is it possible to add
this information in the Amelet HDF mesh category?

[cyril giraudon]

Hi,

If I understand correctly your comment, a mesh has been generated by a
"mesh simulation". This mesh simulation was parameterized with a 'Mesh
tolerance' attribute. Nodes far from each other by a distance lower
than the mesh tolerance are merged and imply only one node in the
mesh.

The produced mesh is a clean object and doesn't how it has been
generated (in term of mesh generator and generator parameters).

Now your software consumes a mesh and your software can take into
account a "mesh tolerance" concept.
Does your software mesh tolerance parameter value ALWAYS equals the
mesh generation mesh tolerance parameter value ?
I don't think so.
So the mesh tolerance parameter is more a simulation parameter than a
mesh characteristic.

In this condition, you can add a simulation parameter in the
simulation object, for instance :

data.h5
|-- mesh
| `-- $gmesh
`-- simulation
`-- my-simu[@module=my-software
| @version=1.0.0]
`-- parameter[mesh-tolerance=1e-9]

Best regards,

Cyril.