Assignment with Maximum Chordal Error

1. Select Meshing Assign Sizes By Chordal error.

2. GiD asks for the minimum element size. Enter 0.1 and press Return.

3. GiD asks for the maximum element size. Enter 10 and press Return.

4. Enter the chordal error. This error is the maximum distance between the element generated and the real object. Enter 0.05 and press Return.

5. Select Meshing Generate.

6. A window comes up asking if the previous mesh should be eliminated. Click Yes.

7. Another window appears in which you may enter a maximum element size. Leave the default value unaltered and click OK. This results in a high concentration of elements in areas with curves. Now our approximation is significantly improved. (See Figure 8.)

Figure 8. Mesh with maximum chordal error. Here, there is a greater
concentration of elements in the zones with curves.