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4.8.1.1. Locating Causes For Meshing Failures (Geometry Concerns Annotations)

When Analyst encounters geometry that it cannot mesh it generates error message(s) in the simulation log. Warnings may be present in the case of successful simulations as follows.

Here, the Analyst meshing was successful but found 72 sliver faces in the model. It has attached tags C-1 through C-72 to each of the sliver faces to help you locate where there may be faulty geometry.

To do so, you create a Geometry Concerns Annotation. On the Simulation ribbon in the Post-Processing group, click the New Annotation drop-down menu and choose Geometry Concerns:

This example, a section of a coax, shows the concerns (drawn in orange to indicate that they are warnings) in the region between the outer conductor and the insulation. The tag for each concern is shown adjacent:

You can now zoom in to the tag locations to inspect the geometry:

This view shows the 72nd mesh concern (the others are identical). The cause of the problem is that the facetization of the inside of the outer conductor does not match the facetization of the outside of the insulator. It is likely that the outer radius of the dielectric is not exactly the same as the inner radius of the conductor. Very small differences between these radii will produce different facetizations.

The following are options for removing potential geometry problems:

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