Troubleshooting Boundary Layer Mesh Generation
The boundary layer meshing algorithm is sensitive to the topology of the model geometry. If you get an error when trying to build a Boundary Layers node, try the following:
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Remove unnecessary interior boundaries such as boundaries (resulting from Boolean operations of geometry objects) that do not separate materials or physics. An efficient way to do this is to mark these boundaries as Mesh Control Entities in the Geometry Sequence. Once you have removed unnecessary boundaries, mesh the domains using a Free Tetrahedral or a Swept Mesh. When the domains are meshed, the control boundaries are automatically removed, and you can insert boundary layers, ignoring the interfering boundaries.
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Use boundary layer mesh trimming instead of splitting. By default, the boundary layer mesher creates a boundary layer split at each sharp corner in 2D and along each sharp edge in 3D..
To turn off boundary layer splits, see Boundary Layers.
If the mesh generator fails to generate a boundary layer mesh, Error nodes () appear under the Boundary Layers node. If the Error node contains details with coordinates for the location where it failed to create the mesh, the Graphics window indicates that location using red circles. Click the Center at Coordinate button to center the camera so that you can zoom into that location by clicking the Zoom In button () one or more times.