should not be constructed; in the 2D case it defines geometrical edges
on which element layers either should be or should not be
constructed, depending on the value of the previous parameter
- (<b>Specified Edges are</b>). Whatever shapes are specified by this
- parameter, the element layers are not constructed on geometrical
- faces shared by several solids in 3D case and edges shared by
- several faces in 2D case.
+ (<b>Specified Edges are</b>).
\note A mesh shown in the 3D Viewer can prevent selection of faces
and edges, just hide the mesh to avoid this. To avoid a long wait when a
geometry with many faces (or edges) is displayed, the number of faces
(edges) shown at a time is limited by the value of "Sub-shapes
- preview chunk size" preference (in Preferences/Mesh/General tab).
+ preview chunk size" preference (in Preferences/Mesh/General tab).<br>
+
+ Whatever shapes are specified by this
+ parameter, the element layers are not constructed on geometrical
+ faces shared by several solids in 3D case and edges shared by
+ several faces in 2D case. In other words the element layers can be
+ constructed on boundary faces and edges, and are not constructed on
+ internal faces and edges. There is an exception to this rule in 2D
+ case: if "Viscous Layers 2D" hypothesis is assigned to a sub-mesh,
+ the element layers can be constructed on boundary edges of the shape
+ of this sub-mesh.
+ \image html viscous_layers_on_submesh.png 2D viscous layers constructed on boundary edges of a sub-mesh on a disk face.
+
</li>
</ul>