GiD user manual : Generating the mesh with assignment of size around lines

  • Open the Preferences window, which is found in Utilities , and select the Meshing->General branch. In this window there is an option called Size transitions which defines the size gradient of the elements. A high transition number means a fast grown of small sizes. Select a transition size of 0.8 to have a fast transition and then obtain few elements. Click Apply .
  • Choose Mesh->Reset mesh data to delete the previously assigned sizes.
  • Choose Mesh->Unstructured->Assign sizes on lines . A window appears in which to enter the element size around the lines to be selected. Enter size 0.7 and click Assign .
  • Select only the lines of the wheel profile (see next figure) in the same way as in previous section and press ESC .
  • The window appears again, click Close to finish.

Selected lines of the wheel profile

  • Choose Mesh->Generate mesh . A window appears asking if the previous mesh should be eliminated. Click Yes .
  • Another window opens in which the maximum element size should be entered. Leave the last value unaltered and click View mesh .
  • A greater concentration of elements has been achieved around the selected lines. In contrast to the case in previous section, this mesh is more accurate since lines define the profile much better than points do.

Mesh with assignment of sizes around lines