The Target Jacobian Ratio (Corner Nodes) global option allows you to set a target Jacobian Ratio that you would like the mesh to satisfy.

The target Jacobian ratio value drives improvements to tetrahedral elements. If you set the target Jacobian ratio and the mesh contains tetrahedral elements, the mesher will attempt to improve the tetrahedral elements to meet the target Jacobian ratio that you specified. If the target Jacobian ratio 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 Jacobian ratio. 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 Jacobian ratio if you intend to run a simulation that is sensitive to mesh quality. However, because setting the target Jacobian ratio increases memory usage and the time required to generate the mesh, you should not set the Jacobian ratio any higher than necessary.

To set the Target Jacobian Ratio (Corner Nodes), enter a value between 0 (lower quality) and 1 (higher quality). The default is 0.04.