Face merging in the layer addition phase can now be controlled at a
per-patch level. By default, faces that are connected to the same cell
and patch, and which do not differ in orientation by more than the
planar angle, are merged if the patch they belong to is associated with
meshed geometry. This has not changed, but it can now be overridden with
a new "mergeFaces" keyword. This can be set in addLayersControls to
control the default behaviour on all patches, and it can be overridden
in the layer settings associated with each patch. For example:
addLayersControls
{
mergeFaces true; // <-- Merge faces on all patches, not just those
// associated with geometry
layers
{
wall1
{
nSurfaceLayers 2;
}
wall2
{
nSurfaceLayers 2;
mergeFaces false; // <-- Do not merge faces on this patch
}
}
}
In addition, the patch-association has been fixed so that faces are no
longer merged on patches which are set not to merge, but are
cell-connected to patches which are.
This change makes it possible to guarantee that the surface mesh retains
the same geometry before and after layer addition, and therefore add
layers to coupled interfaces.
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