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Custom Discretize

After selecting Discretize , you may need to tailor the discretization on one or more boundary line segments. This can be done with the Custom Discretize option. To Custom Discretize:

  1. Select Custom Discretize custom discretize icon from the toolbar or the Mesh menu.
  2. Use the mouse to select the boundary line segments that you would like to Custom Discretize.
  3. When you are finished selecting, press Enter or right-click and select Done Selection.
  4. You will see a dialog. There are two ways in which you can change the number of discretizations on the selected segments:
    • Enter the NUMBER of discretizations that you would like to apply to EACH selected segment.
    • Enter a FACTOR, which will be used to MULTIPLY the existing number of discretizations on EACH selected segment.
  5. Select OK, and all selected line segments will be re-discretized according to the value you have entered in the dialog.
  6. Repeat steps 1-5 if different segments require different discretizations since only one number at a time can be entered as a custom discretization.

Custom Discretize always applies a uniform discretization to the selected line segments, using the user-supplied number of discretizations, or multiplication factor, per line segment. If you wish to simulate a "graded" discretization along a boundary using Custom Discretization, you can insert vertices along a boundary to divide it up into smaller segments, and then apply a Custom Discretization to each segment.

  • You must always use the Discretize option first, to produce an initial discretization, before you can Custom Discretize.
  • Before using Custom Discretize, you may want to first try changing the Approximate Number of Elements in the Mesh Setup dialog, and re-selecting Discretize. This may be sufficient to create a discretization to your liking.
  • Discretization can also be customized (refined) using the Double Discretizations option.
  • Anytime the discretization is reset (e.g. with the Reset Mesh option), all Custom Discretization will be lost. If you accidentally reset a Custom Discretization, remember that you can always use the Undo option to Undo any actions in Slide2.
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