Comparing a Volume Mesh with the Geometry

By displaying two different mesh representations, you can compare the volume mesh with the geometry surface to determine the accuracy of the discretization.

In the following example, the original mesh scene shows the volume mesh on a plane section that cuts through the region.

To compare the volume mesh with the geometry:

  1. Right-click the Displayers node and select New Displayer > Geometry.
    • Adding a displayer allows you to apply two different mesh representations.
  2. Select the geometry displayer and set the properties to control the display.
    • To highlight the difference between the two mesh representations, this example sets the geometry displayer properties to:
      • Outline: Activated
      • Line Width: 3.0
  3. Select the Parts node and set the Parts property as required.
    • To display the comparison on the same part, this example sets Parts to same plane section.
  4. Finally, select the geometry displayer and set Representation to Geometry.
    • Now, the mesh displayer displays the volume mesh and the geometry displayer displays the original geometry surface.

This image shows that the volume mesh is a poor representation of the original geometry. By refining the surface size on the boundary, you can improve the accuracy of the discretization, but this results in a higher cell count.