Modifying the Auto-Generated Mesh

Adjust the auto-generated mesh that is generated when the frequency is set or local mesh settings are applied to the geometry.

Note:
  • To generate a tetrahedral mesh, activate the FEM solution method.
  • To generate a voxel mesh, activate the FDTD solution method.
  1. Open the Modify Mesh dialog using one of the following workflows:
    • On the Mesh tab, in the Meshing group, click the  Modify Mesh icon.
    • Press Ctrl+M to use the keyboard shortcut.


    Figure 1. The Modify Mesh Settings dialog (Options tab). On the left, the dialog for triangles and tetraheda and to the right, the dialog for voxels.
  2. Specify the mesh size.
    • To create a mesh using automatic mesh sizes, in the Mesh size field, from the drop-down list select Coarse, Standard or Fine.
    • To create a mesh with a custom mesh size, in the Mesh size field, from the drop-down list select Custom. Specify the lengths applicable to the model.
      1. In the Triangle edge length field, specify the triangle edge length.
      2. In the Wire segment length field, specify the wire edge length.
      3. In the Tetrahedron segment length field, specify the tetrahedron edge length.
      4. In the Voxel size field, specify the length for the voxel width, depth and height.
  3. Specify the global wire radius.
    • To specify a wire radius, clear the Use intrinsic wire radius check box and in Wire radius field, enter a value for the global wire radius.
    • To allow the Solver to determine the wire representation, select the Use intrinsic wire radius check box.
      Tip: This option may improve the FDTD convergence.
    Note: A local mesh refinement takes precedence over global mesh settings.
  4. Click OK to modify the mesh and to close the dialog.