The Target Skewness global option allows you to set a target Skewness that you would like the mesh to satisfy.

The target skewness value drives improvements to tetrahedral elements. If you set the target skewness and the mesh contains tetrahedral elements, the mesher will attempt to improve the tetrahedral elements to meet the target skewness that you specified. If the target skewness cannot be met, a valid mesh may still be generated. In addition, if Check Mesh Quality is set to Yes, Errors and Warnings, a warning message is displayed to help you address the issues preventing the mesh from satisfying the target skewness. You can right-click the Message field and select the Show Elements option from the context menu to create Named Selections for the elements that don't meet the target.

You should set the target skewness if you intend to run a simulation that is sensitive to mesh quality. However, because setting the target skewness increases memory usage and the time required to generate the mesh, you should not set the skewness any lower than necessary.

To set the Target Skewness, enter a value between 0 (higher quality) and 1 (lower quality). The default is 0.9. For a tetrahedral mesh, you should not set Target Skewness to a value < 0.8.