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Any mesh triangles, whose centroid falls within an overlapping zone, will be assigned the roughness of the lowest priority overlapping zone if Exclude roughness zone boundary when creating 2D mesh is unchecked. When you now mesh a 2D zone, the roughness value that is assigned to each mesh triangle depends on what priority has been set for the roughness zone the triangle is located in. To let you to assign a priority value to the roughness zone, a new Priority field has been added to the roughness zone properties. When the mesh is generated, using the clip meshing method, the software can now assign roughness based on priority, removing the need for editing overlapping geometry. If a zone overlaps another roughness zone, the overlapping part of the zone with the lowest priority value will have precedence over a zone with a higher priority value. Now you can assign a priority value to roughness zones.

A message would be included in the log indicating which zones intersected, and you would need to correct the overlapping geometry of the intersecting zones before the 2D zone could be meshed successfully. Previously, when two or more roughness zones that are located within the same 2D zone overlapped, the mesh could not be generated. Overlapping roughness zones for clip meshing*

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